Results for "Seongjoon Ahn"

total 1108took 0.08s
More on Meta-Stable Brane Configuration by Quartic Superpotential for FundamentalsJan 01 2008Mar 26 2008For the case where the gauge theory superpotential has a quartic term as well as the mass term for quarks, the nonsupersymmetric meta-stable brane configuration was found recently. By adding the orientifold 6-planes and the extra fundamental flavors to ... More
Quark-Monopole Potentials from Supersymmetric SL(3,R) Deformed IIB SupergravityMay 01 2006Aug 22 2006We recompute the quark-monopole potential from supersymmetric SL(3,R) deformation of IIB supergravity background dual to deformed Coulomb branch flow of the N=4 super Yang-Mills theory. The marginal deformations strengthen the Coulombic attraction between ... More
Supersymmetric SO(N)/Sp(N) Gauge Theory from Matrix Model:Exact Mesonic VacuaJan 04 2003Mar 04 2003By performing the matrix integral over the tree level superpotential of N=1 supersymmetric SO(N)/Sp(N) gauge theories obtained from N=2 SQCD by adding the mass term for the adjoint scalar field, the exact effective superpotential in terms of meson field ... More
N=2 SCFT and M Theory on AdS_4 x Q^{1,1,1}Aug 25 1999Coincident M2 branes at a conical singularity are related to M theory on AdS_4 x X_7 for an appropriate 7 dimensional Sasaki-Einstein manifold X_7. For X_7=Q^{1,1,1}=(SU(2) x SU(2) x SU(2))/(U(1) x U(1)) which was found sometime ago, the infrared limit ... More
Other Meta-Stable Brane Configuration by Adding an Orientifold 6-Plane to Giveon-KutasovDec 01 2007Jun 17 2008Giveon and Kutasov have found the type IIA intersecting nonsupersymmetric meta-stable brane configuration where the electric gauge theory superpotential has a quartic term as well as the mass term for quarks. In this paper, by adding the orientifold 6-plane ... More
Meta-Stable Brane Configuration with Orientifold 6 PlaneJan 16 2007May 14 2007We present the intersecting brane configuration of type IIA string theory corresponding to the meta-stable nonsupersymmetric vacua in four dimensional N=1 supersymmetric SU(N_c) gauge theory with a symmetric flavor, a conjugate symmetric flavor and fundamental ... More
N=1 Conformal Supergravity and Twistor-String TheorySep 20 2004The physical states of N=4 conformal supergravity in four dimensions occur in twistor-string theory by Berkovits and Witten(hep-th/0406051). We study two alternative versions of twistor-string theory based on the B-model of weighted projective space WCP^{3|2} ... More
Restricted sine-Gordon Theory in the Repulsive Regime as Perturbed Minimal CFTsNov 11 1991We construct the restricted sine-Gordon theory by truncating the sine-Gordon multi-soliton Hilbert space for the repulsive coupling constant due to the quantum group symmetry $SL_q(2)$ which we identify from the Korepin's $S$-matrices. We connect this ... More
Higher Spin Currents in Wolf Space: Part IIAug 04 2014The 16 lowest higher spin currents of spins (1, 3/2, 3/2, 2), (3/2, 2, 2, 5/2 ), (3/2, 2, 2, 5/2) and (2, 5/2, 5/2, 3) in terms of N=2 WZW affine currents were obtained in the N=4 superconformal Wolf space coset SU(5)/[SU(3) x SU(2) x U(1)] previously. ... More
The Operator Product Expansion of the Lowest Higher Spin Current at Finite NAug 01 2012Dec 10 2012For the N=2 Kazama-Suzuki(KS) model on CP^3, the lowest higher spin current with spins (2, 5/2, 5/2,3) is obtained from the generalized GKO coset construction. By computing the operator product expansion of this current and itself, the next higher spin ... More
Other Squashing Deformation and N=3 Superconformal Chern-Simons Gauge TheoryOct 14 2008Dec 10 2008We consider one of the well-known solutions in eleven-dimensional supergravity where the seven-dimensional Einstein space is given by a SO(3)-bundle over the CP^2. By reexaming the AdS_4 supergravity scalar potential, the holographic renormalization group ... More
Squashing Gravity Dual of N=6 Superconformal Chern-Simons Gauge TheorySep 22 2008Mar 18 2009Four-dimensional field equations are determined for perturbations of the quotient seven-sphere size and squashing parameter in eleven-dimensional supergravity. The quotient seven-sphere is a S^1-bundle over the CP^3 which is regarded as a S^2-fibration ... More
Local regularity of super-potentials and equidistribution of positive closed currents of $\mathbb{P}^k$Jul 14 2016Aug 30 2016In this paper, we introduce notions about local regularity of the super-potential and prove equidistribution of positive closed $(p, p)$-currents of $\mathbb{P}^k$ whose super-potentials are bounded near an invariant analytic subset, for holomorphic endomorphisms ... More
Meta-Stable Brane Configurations of Multiple Product Gauge Groups with Orientifold 6 PlaneOct 01 2007Apr 21 2009Starting from an N=1 supersymmetric electric gauge theory with the gauge group SU(N_c) x SU(N_c') x SU(N_c'') with fundamentals for each gauge group, the bifundamentals, a symmetric flavor and a conjugate symmetric flavor for SU(N_c), we apply Seiberg ... More
Comments on MHV Tree Amplitudes for Conformal Supergravitons from Topological B-ModelApr 12 2005We use the twistor-string theory on the B-model of CP^{3|4} to compute the maximally helicity violating(MHV) tree amplitudes for conformal supergravitons. The correlator of a bilinear in the affine Kac-Moody current(Sugawara stress-energy tensor) can ... More
More on Penrose Limit of AdS_4 x Q^{1,1,1}May 01 2002Jun 10 2002We consider a Penrose limit of AdS_4 x Q^{1,1,1} that provides the pp-wave geometry equal to the one in the Penrose limit of AdS_4 x S^7. We expect that there exists a subsector of three dimensional N=2 dual gauge theory which has enhanced N=8 maximal ... More
Higher Spin Currents in Wolf Space: Part INov 25 2013Feb 26 2014For the N=4 superconformal coset theory described by SU(N+2)/SU(N) (that contains a Wolf space) with N=3, the N=2 WZW affine current algebra with constraints is obtained. The 16 generators of the large N=4 linear superconformal algebra are described by ... More
The Large N 't Hooft Limit of Kazama-Suzuki ModelJun 01 2012Jul 30 2012We consider N=2 Kazama-Suzuki model on CP^N=SU(N+1)/SU(N)xU(1). It is known that the N=2 current algebra for the supersymmetric WZW model, at level k, is a nonlinear algebra. The N=2 W_3 algebra corresponding to N=2 was recovered from the generalized ... More
The Eleven-Dimensional Uplift of Four-Dimensional Supersymmetric RG FlowOct 19 2009The squashed and stretched 7-dimensional internal metric preserving U(1) x U(1) x U(1)_R symmetry possesses an Einstein-Kahler 2-fold which is a base manifold of 5-dimensional Sasaki-Einstein L^{p, q, r} space. The r(transverse to the domain wall)-dependence ... More
Meta-Stable Brane Configurations by Quartic Superpotential for BifundamentalsJan 04 2008Mar 14 2009The type IIA nonsupersymmetric meta-stable brane configuration consisting of three NS5-branes, D4-branes and anti-D4-branes where the electric gauge theory superpotential has a quartic term for the bifundamentals besides a mass term is constructed. By ... More
More Meta-Stable Brane Configurations without D6-BranesJul 01 2007Sep 21 2007We describe the intersecting brane configurations, consisting of NS-branes, D4-branes(and anti-D4-branes), in type IIA string theory corresponding to the meta-stable nonsupersymmetric vacua of N=1 SU(N_c) x SU(N_c') x SU(N_c'') gauge theory with bifundamentals. ... More
Meta-Stable Brane Configuration of Product Gauge GroupsApr 02 2007Feb 15 2008Starting from the N=1 SU(N_c) x SU(N_c') gauge theory with fundamental and bifundamental flavors, we apply the Seiberg dual to the first gauge group and obtain the N=1 dual gauge theory with dual matters including the gauge singlets. By analyzing the ... More
Mirror Symmetry of Calabi-Yau SupermanifoldsJul 02 2004Sep 27 2004We study super Landau-Ginzburg mirrors of the weighted projective superspace WCP^{3|2} which is a Calabi-Yau supermanifold and appeared in hep-th/0312171(Witten) in the topological B-model. One of them is an elliptic fibration over the complex plane whose ... More
Confining Phase of N=1 $Sp(N_c)$ Gauge Theories via M Theory FivebraneDec 16 1997The moduli space of vacua for the confining phase of N=1 $Sp(N_c)$ supersymmetric gauge theories in four dimensions is studied by M theory fivebrane. We construct M theory fivebrane configuration corresponding to the perturbation of superpotential in ... More
Finite-size effect of η-deformed AdS_5 x S^5 at strong couplingNov 30 2016We compute Luscher corrections for a giant magnon in the \eta-deformed (AdS_5\times S^5)_{\eta} using the su(2|2)_q-invariant S-matrix at strong coupling and compare with the finite-size effect of the corresponding string state, derived previously. We ... More
Hawking effects on the entanglement near the Schwarzschild black holeJul 29 2006Jan 31 2007Hawking radiation effects on an entangled pair near the event horizon of a Schwarzschild black hole are investigated. The Hawking radiation was found to degrade both the quantum coherence of the entangled state and the mutual correlations of the entangled ... More
Entanglement and final state of a black hole under general unitary transformationJun 07 2010Final state of a black hole is studied by taking into account a general unitary evolution of a black hole matter state. It is found that the mixedness decreases under general unitary transformation when the initial matter state was in mixed state and ... More
Control of black hole evaporation?Apr 26 2006Feb 24 2007Contradiction between Hawking's semi-classical arguments and string theory on the evaporation of black hole has been one of the most intriguing problems in fundamental physics. A final-state boundary condition inside the black hole was proposed by Horowitz ... More
Holographic Supergravity Dual to Three Dimensional N=2 Gauge TheoryJun 09 2008Aug 08 2008By examining the previously known holographic N=2 supersymmetric renormalization group flow solution in four dimensions, we describe the mass-deformed Bagger-Lambert theory, that has SU(3)_I x U(1)_R symmetry, by the addition of mass term for one of the ... More
Two Circular Wilson Loops and Marginal DeformationsJun 08 2006Sep 06 2006We study type IIB supergravity backgrounds which are dual to marginal deformations of N=4 super Yang-Mills theory. We re-examine two circular Wilson loops and describe how the phase transition occurs in the presence of deformation parameter.
The Coset Spin-4 Casimir Operator and Its Three-Point Functions with ScalarsNov 01 2011Jan 23 2012We find the GKO coset construction of the dimension 4 Casimir operator that contains the quartic WZW currents contracted with completely symmetric SU(N) invariant tensors of ranks 4, 3, and 2. The requirements, that the operator product expansion with ... More
The Large N 't Hooft Limit of Coset Minimal ModelsJun 02 2011Oct 13 2011Recently, Gaberdiel and Gopakumar proposed that the two-dimensional WA_{N-1} minimal model conformal field theory in the large N 't Hooft limit is dual to the higher spin theories on the three-dimensional AdS space with two complex scalars. In this paper, ... More
New N=2 Supersymmetric Membrane Flow In Eleven-Dimensional SupergravitySep 21 2009Oct 21 2009We construct the 11-dimensional lift of the known N=2 supersymmetric RG flow solution in 4-dimensional N=8 gauged supergravity. The squashed and stretched 7-dimensional internal metric preserving SU(2) x U(1) x U(1)_R symmetry contains an Einstein-Kahler ... More
Meta-Stable Brane Configurations by Dualizing the Two Gauge GroupsApr 01 2008Oct 26 2009We consider the N=1 supersymmetric gauge theories with product gauge groups. The two kinds of D6-branes in the electric theory are both displaced and rotated respectively where these deformations are interpreted as the mass terms and quartic terms for ... More
Meta-Stable Brane Configurations, Multiple NS5-Branes, and Rotated D6-BranesMar 06 2008Apr 21 2009We construct the type IIA nonsupersymmetric meta-stable brane configurations corresponding to the various N=1 supersymmetric gauge theories. The D6-branes are both displaced and rotated where these deformations are described as the mass term and quartic ... More
Meta-Stable Brane Configurations of Triple Product Gauge GroupsAug 31 2007Apr 21 2009From an N=1 supersymmetric electric gauge theory with the gauge group SU(N_c) x SU(N_c') x SU(N_c'') with fundamentals for each gauge group and the bifundamentals, we apply Seiberg dual to each gauge group and obtain the N=1 supersymmetric dual magnetic ... More
Meta-Stable Brane Configurations with Seven NS5-BranesAug 03 2007Mar 21 2008We present the intersecting brane configurations consisting of NS-branes, D4-branes(and anti D4-branes) and O6-plane, of type IIA string theory corresponding to the meta-stable nonsupersymmetric vacua in four dimensional N=1 supersymmetric SU(N_c) x SU(N_c') ... More
Meta-Stable Brane Configurations by Adding an Orientifold-Plane to Giveon-KutasovJun 01 2007Aug 01 2007In hep-th/0703135, they have found the type IIA intersecting brane configuration where there exist three NS5-branes, D4-branes and anti-D4-branes. By analyzing the gravitational interaction for the D4-branes in the background of the NS5-branes, the phase ... More
Penrose Limit of AdS_4 x N^{0,1,0} and N=3 Gauge TheoryJun 19 2002Sep 05 2002We consider M-theory on AdS_4 x N^{0,1,0} where N^{0,1,0}= (SU(3) x SU(2))/(SU(2) x U(1)). We review a Penrose limit of AdS_4 x N^{0,1,0} that provides the pp-wave geometry of AdS_4 x S^7. There exists a subsector of three dimensional N=3 dual gauge theory, ... More
Penrose Limit of AdS_4 x V_{5,2} and Operators with Large R ChargeJun 04 2002Oct 17 2002We consider M-theory on AdS_4 x V_{5,2} where V_{5,2}= SO(5)/SO(3) is a Stiefel manifold. We construct a Penrose limit of AdS_4 x V_{5,2} that provides the pp-wave geometry. There exists a subsector of three dimensional N=2 dual gauge theory, by taking ... More
The Primary Spin-4 Casimir Operators in the Holographic SO(N) Coset Minimal ModelsFeb 01 2012May 14 2012Starting from SO(N) current algebra, we construct two lowest primary higher spin-4 Casimir operators which are quartic in spin-1 fields. For N is odd, one of them corresponds to the current in the WB_{\frac{N-1}{2}} minimal model. For N is even, the other ... More
Geometry, D-Branes and N=1 Duality in Four Dimensions IIMay 02 1997We study N=1 dualities in four dimensional supersymmetric gauge theories in terms of wrapping D 6-branes around 3-cycles of Calabi-Yau threefolds in type IIA string theory. We generalize the recent work of geometrical realization for the models which ... More
Explicit Construction of $N=2$ $W_3$ Current in the $N=2$ Coset $\frac{SU(3)}{SU(2) \times U(1)}$ ModelOct 22 1994Oct 25 1994We discuss the nonlinear extension of $N=2$ superconformal algebra by generalizing Sugawara construction and coset construction built from $N=2$ currents based on Kazama-Suzuki $N=2$ coset model $\frac{SU(3)}{SU(2) \times U(1)}$ in $N=2$ superspace. For ... More
Unruh effect as a noisy quantum channelAug 14 2017We studied the change of the nonlocal correlation of the entanglement in Rindler spacetime by showing that the Unruh effect can be interpreted as a noisy quantum channel having a complete positive and trace preserving map with an operator sum representation. ... More
Effects of Hawking radiation and Wigner rotation on fermion entanglementApr 11 2006Sep 27 2006In this work, we report that the Hawking radiation effect on fermions is fundamentally different from the case of scalar particles. Intrinsic properties of fermions (exclusion principle and spin) affect strongly the interaction of fermions with both Hawking ... More
Inter-valley interactions in Si quantum dotsMay 08 2004Aug 16 2006In this paper, we studied the inter-valley interactions between the orbital functions associated with multi-valley of silicon (Si) quantum dots. Numerical calculations show that the inter-valley coupling between orbital functions increases rapidly with ... More
Local regularity of super-potentials and equidistribution of positive closed currents of $\mathbb{P}^k$Jul 14 2016Aug 02 2017In this paper, we introduce notions about local regularity of the super-potential and prove equidistribution of positive closed $(p, p)$-currents of $\mathbb{P}^k$ whose super-potentials are bounded near an invariant analytic subset, for holomorphic endomorphisms ... More
Higher Spin Currents in Wolf Space: Part IIIApr 01 2015The large N=4 linear superconformal algebra (generated by four spin-1/2 currents, seven spin-1 currents, four spin-3/2 currents and one spin-2 current) found by Sevrin, Troost and Van Proeyen (and other groups) was realized in the N=4 superconformal coset ... More
The Gauge Dual of Gauged N=8 Supergravity TheoryMay 25 2009Mar 09 2010The most general SU(3)-singlet space of gauged N=8 supergravity in four-dimensions is studied recently. The SU(3)-invariant six scalar fields are realized by six real four-forms. A family of holographic N=1 supersymmetric RG flows on M2-branes in three-dimensions ... More
Meta-Stable Brane Configurations with Multiple NS5-BranesNov 01 2007Apr 21 2009Starting from an N=1 supersymmetric electric gauge theory with the multiple product gauge group and the bifundamentals, we apply Seiberg dual to each gauge group, obtain the N=1 supersymmetric dual magnetic gauge theories with dual matters including the ... More
Meta-Stable Brane Configuration and Gauged Flavor SymmetryMar 02 2007Jul 26 2007Starting from an N=1 supersymmetric electric gauge theory with the gauge group Sp(N_c) x SO(2N_c') with fundamentals for the first gauge group factor and a bifundamental, we apply Seiberg dual to the symplectic gauge group only and arrive at the N=1 supersymmetric ... More
Comments on Penrose Limit of AdS_4 x M^{1,1,1}May 13 2002Jun 15 2002We construct a Penrose limit of AdS_4 x M^{1,1,1} where M^{1,1,1}= SU(3) x SU(2) x U(1)/(SU(2) x U(1) x U(1)) that provides the pp-wave geometry equal to the one in the Penrose limit of AdS_4 x S^7. There exists a subsector of three dimensional N=2 dual ... More
Thermodynamics and Form Factors of Supersymmetric Integrable Field TheoriesJun 28 1993We study on-shell and off-shell properties of the supersymmetric sinh-Gordon and perturbed SUSY Yang-Lee models using the thermodynamic Bethe ansatz and form factors. Identifying the supersymmetric models with the Eight Vertex Free Fermion Model, we derive ... More
Free Superfield Realization of N=2 Quantum Super W_{3} AlgebraApr 09 1993We rewrite $ N=2$ quantum super $W_{3}$ algebra, a nonlinear extended $N=2$ super Virasoro algebra, containing one additional primary superfield of dimension $2$ which has no $U(1)$ charge, besides the super stress energy tensor of dimension $1$ in $N=2$ ... More
c=5/2 Free Fermion Model of WB_{2} AlgebraNov 28 1991We investigate the explicit construction of the $WB_{2}$ algebra, which is closed and associative for all values of the central charge $c$, using the Jacobi identity and show the agreement with the results studied previously. Then we illustrate a realization ... More
Comments on Holographic Gravity Dual of N=6 Superconformal Chern-Simons Gauge TheoryDec 23 2008Mar 05 2009The holographic nonsupersymmetric renormalization group flows in four dimensions are found. The mass-deformed N=2, 4 Chern-Simons matter theories can be reproduced from N=1 Chern-Simons matter theory by putting some constraints in the mass terms. We construct ... More
Towards Holographic Gravity Dual of N=1Superconformal Chern-Simons Gauge TheoryJun 30 2008Jul 15 2008As we re-examine the known holographic N=1 supersymmetric renormalization group flow in four dimensions, we describe the mass-deformed Bagger-Lambert theory or equivalently the mass-deformed U(2) x U(2) Chern-Simons gauge theory with level k=1 or 2, that ... More
Meta-Stable Brane Configurations with Five NS5-BranesMay 01 2007Mar 14 2009From an N=1 supersymmetric electric gauge theory with the gauge group SU(N_c) x SU(N_c') with fundamentals for each gauge group, the bifundamentals and a symmetric flavor and a conjugate symmetric flavor for SU(N_c), we apply Seiberg dual to each gauge ... More
RG Flows of Non-Unitary Minimal CFTsFeb 07 1992In this paper we study the renormalization group flow of the $(p,q)$ minimal (non-unitary) CFT perturbed by the $\Phi_{1,3}$ operator with a positive coupling. In the perturbative region $q>>(q-p)$, we find a new IR fixed point which corresponds to the ... More
Rule-Based Spanish Morphological Analyzer Built From Spell Checking LexiconJul 23 2017Preprocessing tools for automated text analysis have become more widely available in major languages, but non-English tools are often still limited in their functionality. When working with Spanish-language text, researchers can easily find tools for ... More
Final state boundary condition of the Schwarzschild black holeJun 05 2006Oct 10 2006It is shown that the internal stationary state of the Schwarzschild black hole can be represented by a maximally entangled two-mode squeezed state of collapsing matter and infalling Hawking radiation. The final boundary condition at the singularity is ... More
Higher Spin Currents with Arbitrary N in the N=1 Stringy Coset Minimal ModelMay 25 2013In the N=1 supersymmetric coset model based on (A_{N-1}^{(1)} \oplus A_{N-1}^{(1)}, A_{N-1}^{(1)}) at level (k, N), the lowest N=1 higher spin supercurrent with spins-(5/2, 3), in terms of two independent numerator WZW currents, is reviewed. By calculating ... More
Higher Spin Currents in the N=1 Stringy Coset Minimal ModelNov 12 2012Mar 24 2013This study reconsidered the N=1 supersymmetric extension of the W_3 algebra which was studied previously. This extension consists of seven higher spin supercurrents (fourteen higher spin currents in the components) as well as the N=1 stress energy tensor ... More
More on Meta-Stable Brane Configurations by Dualizing the Multiple Gauge GroupsMay 01 2008Oct 26 2009We reexamine the N=1 supersymmetric gauge theories with product gauge groups by adding the mass terms and the quartic terms for the flavors: two gauge group theory with fundamentals, bifundamentals and adjoints, three gauge group theory with fundamentals ... More
Brane Configurations for Nonsupersymmetric Meta-Stable Vacua in SQCD with Adjoint MatterAug 23 2006Jan 29 2007We present the configurations of intersecting branes in type IIA string theory corresponding to the meta-stable supersymmetry breaking vacua(hep-th/0608063) in the four-dimensional N=1 supersymmetric Yang-Mills theory coupled massive flavors with adjoint ... More
Explicit Construction of Spin 4 Casimir Operator in the Coset Model $ \hat{SO} (5)_{1} \times \hat{SO} (5)_{m} / \hat{SO} (5)_{1+m} $Sep 01 1992We generalize the Goddard-Kent-Olive (GKO) coset construction to the dimension 5/2 operator for $ \hat{so} (5) $ and compute the fourth order Casimir invariant in the coset model $\hat{SO} (5)_{1} \times \hat{SO} (5)_{m} / \hat{SO} (5)_{1+m} $ with the ... More
Higher Spin Currents in the N=2 Stringy Coset Minimal ModelApr 04 2016In the coset model based on (A_{N-1}^{(1)} \oplus A_{N-1}^{(1)}, A_{N-1}^{(1)}) at level (N, N; 2N), it is known that the N=2 superconformal algebra can be realized by the two kinds of adjoint fermions. Each Kac-Moody current of spin-1 is given by the ... More
Meta-Stable Brane Configurations by Higher Order Polynomial SuperpotentialFeb 01 2008Mar 14 2009We construct the type IIA nonsupersymmetric meta-stable brane configuration consisting of (2k+1) NS5-branes and D4-branes where the electric gauge theory superpotential has an order (2k+2) polynomial for the bifundamentals. We find a rich pattern of nonsupersymmetric ... More
More on Meta-Stable Brane ConfigurationFeb 06 2007Jun 05 2007We describe the intersecting brane configuration of type IIA string theory corresponding to the meta-stable nonsupersymmetric vacua in four dimensional N=1 supersymmetric SU(N_c) gauge theory with an antisymmetric flavor, a conjugate symmetric flavor, ... More
M-theory Lift of Meta-Stable Brane Configuration in Symplectic and Orthogonal Gauge GroupsOct 02 2006Jan 26 2007The M-theory lift for the supersymmetry breaking IIA brane configuration corresponding to the meta-stable state of N=1 unitary supersymmetric Yang-Mills theory with massive flavors was found by Bena et al(hep-th/0608157) recently. We extend this to symplectic ... More
N=2 Conformal Supergravity from Twistor-String TheoryDec 17 2004Jun 15 2005A chiral superfield strength in N=2 conformal supergravity at linearized level is obtained by acting two superspace derivatives on N=4 chiral superfield strength which can be described in terms of N=4 twistor superfields. By decomposing SU(4)_R representation ... More
Light-Cone Effect of Radiation Fields in Cosmological Radiative Transfer SimulationsFeb 08 2015We present a novel method to implement time-delayed propagation of radiation fields in cosmological radiative transfer simulations. Time-delayed propagation of radiation fields requires construction of retarded-time fields by tracking the location and ... More
How Density Environment Changes the Influence of the Dark Matter-Baryon Streaming Velocity on the Cosmological Structure FormationMar 30 2016Aug 03 2016We study the dynamical effect of relative velocities between dark matter and baryonic fluids, which remained supersonic after the epoch of recombination. The impact of this supersonic motion on the formation of cosmological structures was first formulated ... More
Information paradox and black hole final state for fermionsJul 24 2006Jul 25 2006The black hole information paradox is the result of contradiction between Hawking's semi-classical argument, which dictates that the quantum coherence should be lost during the black hole evaporation and the fundamental principles of quantum mechanics, ... More
Calculation of permittivity tensors for invisibility devices by effective medium approach in general relativityJul 01 2010Apr 11 2011Permittivity tensors of arbitrary shaped invisibility devices are obtained using effective medium approach in general relativity. As special cases, analytical expressions for the permittivity tensors of invisibility cloaks for the elliptic cylinder, prolate ... More
Black hole state evolution and Hawking radiationJun 11 2010Nov 09 2010The effect of a black hole state evolution on the Hawking radiation is studied using the final state boundary condition. It is found that theormodynamic or statistical mechanical properties of a black hole depend strongly on the unitary evolution operator ... More
Global Universality of Macdonald Plane PartitionsSep 07 2018We study scaling limits of periodically weighted skew plane partitions with semilocal interactions and general boundary conditions. The semilocal interactions correspond to the Macdonald symmetric functions which are $(q,t)$-deformations of the Schur ... More
Mekler's construction and tree propertiesMar 17 2019Mekler constructed a way to produce a pure group from any given structure where the construction preserves $\kappa$-stability for any cardinal $\kappa$. Not only the stability, it is known that his construction preserves various model-theoretic properties ... More
Imaging of interlayer coupling in van der Waals heterostructures using a bright-field optical microscopeDec 23 2016May 01 2017Vertically stacked atomic layers from different layered crystals can be held together by van der Waals forces, which can be used for building novel heterostructures, offering a platform for developing a new generation of atomically thin, transparent and ... More
Three-Dimensional SCFTs, Supersymmetric Domain Wall and Renormalization Group FlowAug 08 2000Dec 06 2000By analyzing SU(3)xU(1) invariant stationary point, studied earlier by Nicolai and Warner, of gauged N=8 supergravity, we find that the deformation of S^7 gives rise to nontrivial renormalization group flow in a three-dimensional boundary super conformal ... More
Higher Spin Currents in the Enhanced N=3 Kazama-Suzuki ModelJul 04 2016Nov 16 2016The N=3 Kazama-Suzuki model at the `critical' level has been found by Creutzig, Hikida and Ronne. We construct the lowest higher spin currents of spins (3/2, 2,2,2,5/2, 5/2, 5/2, 3) in terms of various fermions. In order to obtain the operator product ... More
Finite-size giant magnons on η-deformed AdS_5 x S^5Jun 03 2014We consider strings moving in the R_t x S^3_\eta subspace of the \eta-deformed AdS_5 x S^5 and obtain a class of solutions depending on several parameters. They are characterized by the string energy and two angular momenta. Finite-size dyonic giant magnon ... More
The OPEs of Spin-4 Casimir Currents in the Holographic SO(N) Coset Minimal ModelsJan 02 2013Mar 04 2013We compute the operator product expansion (OPE) between the spin-4 current and itself in the WD_4 coset minimal model with SO(8) current algebra. The right hand side of this OPE contains the spin-6 Casimir current which is also a generator of WD_4 coset ... More
Exact S-matrices for AdS_3/CFT_2Nov 19 2012We propose exact $S$-matrices for the AdS_3/CFT_2 duality between Type IIB strings on AdS_3 x S^3 x M_4 with M_4=S^3 x S^1 or T^4 and the corresponding two-dimensional conformal field theories. We fix the complete two-particle S-matrices for both those ... More
Dielectric-branes in Non-supersymmetric SO(3)-invariant Perturbation of Three-dimensional N=8 Yang-Mills TheoryMay 04 2001Jul 24 2001We study non-supersymmetric SO(3)-invariant deformations of d=3, N=8 super Yang-Mills theory and their type IIA string theory dual. By adding both gaugino mass and scalar mass, dielectric D4-brane potential coincides with D5-brane potential in type IIB ... More
The 11-dimensional Metric for AdS/CFT RG Flows with Common SU(3) InvarianceAug 20 2002Sep 25 2002The compact 7-manifold arising in the compactification of 11-dimensional supergravity is described by the metric encoded in the vacuum expectation values(vevs) in d=4, N=8 gauged supergravity. Especially, the space of SU(3)-singlet vevs contains various ... More
Discrete Derivative Asymptotics of the $β$-Hermite EigenvaluesSep 18 2018Jan 28 2019We consider the asymptotics of the difference between the empirical measures of the $\beta$-Hermite tridiagonal matrix and its minor. We prove that this difference has a deterministic limit and Gaussian fluctuations. Through a correspondence between measures ... More
Towards An N=1 SU(3)-Invariant Supersymmetric Membrane Flow In Eleven-Dimensional SupergravityJan 21 2010Apr 08 2010The M-theory lift of N=1 G_2-invariant RG flow via a combinatoric use of the 4-dimensional RG flow and 11-dimensional Einstein-Maxwell equations was found some time ago. The 11-dimensional metric, a warped product of an asymptotically AdS_4 space with ... More
Compactifications of F-Theory on Calabi-Yau Threefolds at Constant Coupli ngJan 24 1997Mar 03 1997Generalizing the work of Sen, we analyze special points in the moduli space of the compactification of the F-theory on elliptically fibered Calabi-Yau threefolds where the coupling remains constant. These contain points where they can be realized as orbifolds ... More
Floquet scattering theory of negative magneto-conductance of 2DEG under microwave radiationApr 10 2005We develop a theory of magneto-transport properties of two-dimensional electron gas in cylindrical geometry where finite bias and microwave are locally applied. By invesitgating the Landauer conductance based on Floquet theory, we obtain the conductance ... More
Cosmological Lower Bound on Dark Matter Masses from the Soft Gamma-ray BackgroundDec 26 2004Motivated by a recent detection of 511 keV photons from the center of our Galaxy, we calculate the spectrum of the soft gamma-ray background of the redshifted 511 keV photons from cosmological halos. Annihilation of dark matter particles into electron-positron ... More
Violation of Rotational Invariance of Local Realistic Models with Two SettingsDec 05 2007Nov 22 2008We have considered a two-particle Bell experiment to visualize the conflict between rotational invariance of physical laws and a specific local realistic theory. The experiment is reproducible by using a local realistic theory obtained in a two-setting ... More
Vehicle Routing Problem with Vector Profits (VRPVP) with Max-Min CriterionOct 29 2017This paper introduces a new routing problem referred to as the vehicle routing problem with vector profits. Given a network composed of nodes (depot/sites) and arcs connecting the nodes, the problem determines routes that depart from the depot, visit ... More
Inflation and Leptogenesis in a $U(1)$-enhanced supersymmetric modelJun 29 2017Jun 08 2019Motivated by the flavored Peccei-Quinn symmetry for unifying flavor physics and string theory, we investigate a supersymmetric extension of standard model (SM) for an explanation of inflation and leptogenesis by introducing $U(1)$ symmetries such that ... More
A necessary condition for sphaleron process in the presence of anomalous $U(1)$ symmetryJun 08 2017Jul 23 2017We argue that, in the presence of anomalous $U(1)$ symmetries, the invariance of Lagrangian including the standard model (SM) under the axionic shift symmetries requires a necessary condition $\sum_i\delta^{\rm GS}_{i}\leq2N_f$, where $N_f$ stands for ... More
QCD Axion as a Bridge Between String Theory and Flavor PhysicsApr 05 2016Apr 12 2016We construct a string-inspired model, motivated by the flavored Peccei-Quinn (PQ) axions, as a useful bridge between flavor physics and string theory. The key feature is two anomalous gauged $U(1)$ symmetries, responsible for both the fermion mass hierarchy ... More
Axion and Neutrino physics in a $U(1)$-enhanced supersymmetric modelNov 25 2016Jul 22 2017Motivated by the flavored Peccei-Quinn symmetry for unifying the flavor physics and string theory, we construct an explicit model by introducing a $U(1)$ symmetry such that the $U(1)_X$-$[gravity]^2$ anomaly-free condition together with the standard model ... More
String solutions in AdS_3 x S^3 x T^4 with NS-NS B-fieldApr 30 2014We develop an approach for solving the string equations of motion and Virasoro constraints in any background which has some (unfixed) number of commuting Killing vector fields. It is based on a specific ansatz for the string embedding. We apply the above ... More
Finite-size Effects for Single SpikeJun 06 2008Jul 16 2008We use the reduction of the string dynamics on R_t x S^3 to the Neumann-Rosochatius integrable system to map all string solutions described by this dynamical system onto solutions of the complex sine-Gordon integrable model. This mapping relates the parameters ... More
The Zamolodchikov-Faddeev algebra for open strings attached to giant gravitonsApr 25 2008May 01 2008We extend the Zamolodchikov-Faddeev algebra for the superstring sigma model on $AdS_{5}\times S^{5}$, which was formulated by Arutyunov, Frolov and Zamaklar, to the case of open strings attached to maximal giant gravitons, which was recently considered ... More