text stringlengths 89 2.49k | category stringclasses 19
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Dressing Cosets: The account of the Poisson-Lie T-duality is presented for the case when the
action of the duality group on a target is not free. At the same time a
generalization of the picture is given when the duality group does not even act
on $\si$-model targets but only on their phase spaces. The outcome is a hug... | hep-th |
Holographic Interpretation of Relative State Complexity: We investigate a large-$N$ CFT in a high-energy pure state coupled to a small
auxiliary system of $M$ weakly-interacting degrees of freedom, and argue the
relative state complexity of the auxiliary system is holographically dual to an
effective low-energy notion ... | hep-th |
Is N = 8 Supergravity Ultraviolet Finite?: Conventional wisdom holds that no four-dimensional gravity field theory can
be ultraviolet finite. This understanding is based mainly on power counting.
Recent studies confirm that one-loop N = 8 supergravity amplitudes satisfy the
so-called `no-triangle hypothesis', which sta... | hep-th |
From 4d Ambitwistor Strings to On Shell Diagrams and Back: We investigate the relation between 4d ambitwistor string theory and on-shell
diagrams for planar N=4 super-Yang-Mills and N=8 supergravity, and deduce
several new results about their scattering amplitudes at tree-level and 1-loop.
In particular, we derive new ... | hep-th |
Fractional Strings in (p,q) 5-brane and Quiver Matrix String Theory: We study the (p,q)5-brane dynamics from the viewpoint of Matrix string theory
in the T-dualized ALE background. The most remarkable feature in the
(p,q)5-brane is the existence of ``fractional string'', which appears as the
instanton of 5-brane gauge ... | hep-th |
Higher Dimensional Supersymmetry: Higher dimensional super symmetry has been analyzed in terms of quaternion
variables and the theory of quaternion harmonic oscillator has been analyzed.
Supersymmertization of quaternion Dirac equation has been developed for
massless,massive and interacting cases including generalized ... | hep-th |
Matrix Theory, AdS/CFT and Higgs-Coulomb Equivalence: We discuss the relation between the Matrix theory definitions of a class of
decoupled theories and their AdS/CFT description in terms of the corresponding
near-horizon geometry. The near horizon geometry, naively part of the Coulomb
branch, is embedded in the Higgs ... | hep-th |
Four-dimensional $N=1$ theories, S-fold constraints on T-branes, and
behaviors in IR and UV: We analyze four-dimensional (4d) $N=1$ superconformal field theories (SCFTs)
obtained as deformations of 4d $N=2$ SCFTs on S-folds by tilting 7-branes.
Geometric compatibility with the structures of S-folds constrains the for... | hep-th |
Holographic Geometric Entropy at Finite Temperature from Black Holes in
Global Anti de Sitter Spaces: Using a holographic proposal for the geometric entropy we study its behavior
in the geometry of Schwarzschild black holes in global $AdS_p$ for $p=3,4,5$.
Holographically, the entropy is determined by a minimal surfa... | hep-th |
Quantized Noncommutative Geometry from Multitrace Matrix Models: In this article the geometry of quantum gravity is quantized in the sense of
being noncommutative (first quantization) but it is also quantized in the sense
of being emergent (second quantization). A new mechanism for quantum geometry
is proposed in which... | hep-th |
Conformal graphs as twisted partition functions: We show that a class of $L$-loop conformal ladder graphs correspond to
twisted partition functions of free massive complex scalars in $d=2L+1$
dimensions. The graphs arise as four-point functions in certain two- and
four-dimensional conformal fishnet models. The twisted ... | hep-th |
A Resummable beta-Function for Massless QED: Within the set of schemes defined by generalized, manifestly gauge invariant
exact renormalization groups for QED, it is argued that the beta-function in
the four dimensional massless theory cannot possess any nonperturbative power
corrections. Consequently, the perturbative... | hep-th |
Reflected entropy in Galilean conformal field theories and flat
holography: We obtain the reflected entropy for bipartite states in a class of
$(1+1)$-dimensional Galilean conformal field theories ($GCFT_{1+1}$) through a
replica technique. Furthermore we compare our results with the entanglement
wedge cross section ... | hep-th |
Scattering in Twisted Yangians: We study the bulk and boundary scattering of the sl(N) twisted Yangian spin
chain via the solution of the Bethe ansatz equations in the thermodynamic
limit. Explicit expressions for the scattering amplitudes are obtained and the
factorization of the bulk scattering is shown. The issue of... | hep-th |
Tunneling Mechanism in Kerr-Newman Black Hole and Dimensional Reduction
near the Horizon: It is shown that the derivation of the Hawking radiation from a rotating
black hole on the basis of the tunneling mechanism is greatly simplified by
using the technique of the dimensional reduction near the horizon. This
techniq... | hep-th |
Conformal multi-Regge theory: We propose and explore the Regge limit for correlation functions of five
local primary operators in conformal field theories. After reviewing some
features of Regge theory for flat-space scattering amplitudes, we analyse the
analytic structure of conformal blocks both in position and Melli... | hep-th |
Holographic Entanglement Entropy for the Most General Higher Derivative
Gravity: The holographic entanglement entropy for the most general higher derivative
gravity is investigated. We find a new type of Wald entropy, which appears on
entangling surface without the rotational symmetry and reduces to usual Wald
entrop... | hep-th |
Bound states in the three dimensional phi^4 model: We discuss the spectrum of the three dimensional phi^4 theory in the broken
symmetry phase. In this phase the effective potential between the elementary
quanta of the model is attractive and bound states of two or more of them may
exist. We give theoretical and numeric... | hep-th |
Black holes on cylinders are not algebraically special: We give a Petrov classification for five-dimensional metrics. We classify
Ricci-flat metrics that are static, have an SO(3) isometry group and have
Petrov type 22. We use this classification to look for the metric of a black
hole on a cylinder, i.e. a black hole w... | hep-th |
Matching gluon scattering amplitudes and Wilson loops in off-shell
regularization: We construct a regularization for light-like polygonal Wilson loops in ${\cal
N}=4$ SYM, which matches them to the off-shell MHV gluon scattering amplitudes.
Explicit calculations are performed for the 1-loop four gluon case. The off
l... | hep-th |
An Alternative to Compactification: Conventional wisdom states that Newton's force law implies only four
non-compact dimensions. We demonstrate that this is not necessarily true in the
presence of a non-factorizable background geometry. The specific example we
study is a single 3-brane embedded in five dimensions. We s... | hep-th |
Superconformally covariant operators and super W algebras: We study superdifferential operators of order $2n+1$ which are covariant with
respect to superconformal changes of coordinates on a compact super Riemann
surface. We show that all such operators arise from super M\"obius covariant
ones. A canonical matrix repre... | hep-th |
Two-Dimensional Quantum PoincarÉ Group: Quantum Poincar\'e-Weyl group in two dimensional quantum Minkowski space-time
is considered and an appriopriate relativistic kinematics is investigated. It
is claimed that a consistent approach to the above questions demands a kind of
a ``quantum geometry'' in the $q$-deformed sp... | hep-th |
Exact Results in 5D from Instantons and Deconstruction: We consider non-perturbative effects in theories with extra dimensions and
the deconstructed versions of these theories. We establish the rules for
instanton calculations in 5D theories on the circle, and use them for an
explicit one-instanton calculation in a sup... | hep-th |
Higher derivative corrections to DBI action at $ α'^2$ order: We use the compatibility of D-brane action with linear off-shell T-duality
and linear on-shell S-duality as guiding principles to find all world volume
couplings of one massless closed and three massless open strings at order
$\alpha'^2$ in type II superstri... | hep-th |
Covariant - tensor method for quantum groups and applications I:
$SU(2)_{q}$: A covariant - tensor method for $SU(2)_{q}$ is described. This tensor method
is used to calculate q - deformed Clebsch - Gordan coefficients. The connection
with covariant oscillators and irreducible tensor operators is established.
This ap... | hep-th |
Comments on gauge invariant overlaps for marginal solutions in open
string field theory: We calculate the gauge invariant overlaps for
Schnabl/Kiermaier-Okawa-Rastelli-Zwiebach's marginal solution with nonsingular
current. The obtained formula is the same as that for
Fuchs-Kroyter-Potting/Kiermaier-Okawa's marginal s... | hep-th |
Interactions of Charged Spin-2 Fields: In light of recent progress in ghost-free theories of massive gravity and
multi-gravity, we reconsider the problem of constructing a ghost-free theory of
an interacting spin-2 field charged under a U(1) gauge symmetry. Our starting
point is the theory originally proposed by Federb... | hep-th |
Comments on Perturbative Dynamics of Non-Commutative Yang-Mills Theory: We study the U(N) non-commutative Yang-Mills theory at the one-loop
approximation. We check renormalizability and gauge invariance of the model and
calculate the one-loop beta function. The interaction of the SU(N) gauge bosons
with the U(1) gauge ... | hep-th |
From positive geometries to a coaction on hypergeometric functions: It is well known that Feynman integrals in dimensional regularization often
evaluate to functions of hypergeometric type. Inspired by a recent proposal for
a coaction on one-loop Feynman integrals in dimensional regularization, we use
intersection numb... | hep-th |
The Berry-Tabor conjecture for spin chains of Haldane-Shastry type: According to a long-standing conjecture of Berry and Tabor, the distribution
of the spacings between consecutive levels of a "generic'' integrable model
should follow Poisson's law. In contrast, the spacings distribution of chaotic
systems typically fo... | hep-th |
Lessons from All Logs Summation in Yukawa Theories: Some features of old results in the total summation of all logarithmic
contributions of all diagrams in Yukawa theory are presented. We discuss some
lessons from this picture for the description of Pomeron, odderon, etc. in QCD. | hep-th |
Fermion vacuum energies in brane world models: The fermion representations and boundary conditions in five dimensional anti
de Sitter space are described in detail. In each case the one loop effective
action is calculated for massless fermions. The possibility of topological or
Wilson loop symmetry breaking is discusse... | hep-th |
Linear $r$-matrix algebra for classical separable systems: We consider a hierarchy of the natural type Hamiltonian systems of $n$
degrees of freedom with polynomial potentials separable in general ellipsoidal
and general paraboloidal coordinates. We give a Lax representation in terms of
$2\times 2$ matrices for the who... | hep-th |
Detecting topological sectors in continuum Yang-Mills theory and the
fate of BRST symmetry: In this work, motivated by Laplacian type center gauges in the lattice,
designed to avoid the Gribov problem, we introduce a new family of gauge
fixings for pure Yang-Mills theories in the continuum. This procedure separates
t... | hep-th |
Opers and TBA: In this note we study the "conformal limit" of the TBA equations which
describe the geometry of the moduli space of four-dimensional N=2 gauge
theories compactified on a circle. We argue that the resulting conformal TBA
equations describe a generalization of the oper submanifold in the space of
complex f... | hep-th |
On the canonical structure and extra mode of generalized unimodular
gravity: We consider a recently proposed generalization of unimodular gravity, where
the lapse function is constrained to be equal to a function of the determinant
of the spatial metric $f(h)$, as a potential origin of a dark fluid with a
generally $... | hep-th |
Higgs Phenomenon for 4-D Gravity in Anti de Sitter Space: We show that standard Einstein gravity coupled to a free conformal field
theory (CFT) in Anti de Sitter space can undergo a Higgs phenomenon whereby the
graviton acquires a nonzero mass (and three extra polarizations). We show that
the essential ingredients of t... | hep-th |
Non-Einstein geometries in Chiral Gravity: We analyze the asymptotic solutions of Chiral Gravity (Topologically Massive
Gravity at \mu l = 1 with Brown-Henneaux boundary conditions) focusing on
non-Einstein metrics. A class of such solutions admits curvature singularities
in the interior which are reflected as singular... | hep-th |
Fermion scattering on topological solitons in the $\mathbb{CP}^{N-1}$
model: The scattering of Dirac fermions in the background fields of topological
solitons of the $(2+1)$-dimensional $\mathbb{CP}^{N-1}$ model is studied using
analytical and numerical methods. It is shown that the exact solutions for
fermionic wave... | hep-th |
Non-Abelian tensor gauge fields and new topological invariants: In this article we shall consider the tensor gauge fields which are possible
to embed into the existing framework of generalized YM theory and therefore
allows to construct the gauge invariant and metric independent forms in 2n+4
and 2n+2 dimensions. These... | hep-th |
Flux-Induced Baryon Asymmetry: I propose that the primordial baryon asymmetry of the universe was induced by
the presence of a non-vanishing antisymmetric field background H_ijk across the
three space dimensions. This background creates a dilute (B-L)-number density
in the universe cancelling the contribution from bary... | hep-th |
Mesoscopic Fluctuations in Stochastic Spacetime: Mesoscopic effects associated with wave propagation in spacetime with metric
stochasticity are studied. We show that the scalar and spinor waves in a
stochastic spacetime behave similarly to the electrons in a disordered system.
Viewing this as the quantum transport prob... | hep-th |
Matching three-point functions of BMN operators at weak and strong
coupling: The agreement between string theory and field theory is demonstrated in the
leading order by providing the first calculation of the correlator of three
two-impurity BMN states with all non-zero momenta. The calculation is performed
in two co... | hep-th |
Winding Tachyons and Stringy Black Holes: We study string theory on $\mathbb{R}^d\times \mathbb{S}^1$. For applications
to thermodynamics, the circumference of the $\mathbb{S}^1$ is the inverse
temperature, $\beta$. We show that for $d=6$, the low energy effective field
theory at the inverse Hagedorn temperature, $\bet... | hep-th |
Transverse Goldstone mode in holographic fluids with broken translations: In this paper we investigate the low energy shear modes in fluid systems with
spontaneously broken translations by a specific holographic model. In absence
of momentum relaxation, we find that there exist two decoupled gapless modes in
the transv... | hep-th |
Unification of Gravity, Gauge and Higgs Fields by Confined Quantum
Fields II -Effective Theory-: Dynamics of quantized free fields ( of spin 0 and 1/2 ) contained in a
subspace $V_*$ of an N+4 dimensional flat space $V$ is studied. The space $V_*$
is considered as a neighborhood of a four dimensional submanifold $M$
... | hep-th |
Exotic Dark Spinor Fields: Exotic dark spinor fields are introduced and investigated in the context of
inequivalent spin structures on arbitrary curved spacetimes, which induces an
additional term on the associated Dirac operator, related to a Cech cohomology
class. For the most kinds of spinor fields, any exotic term ... | hep-th |
The Overall Coefficient of the Two-loop Superstring Amplitude Using Pure
Spinors: Using the results recently obtained for computing integrals over
(non-minimal) pure spinor superspace, we compute the coefficient of the
massless two-loop four-point amplitude from first principles. Contrasting with
the mathematical dif... | hep-th |
Multivalued Fields on the Complex Plane and Conformal Field Theories: In this paper a class of conformal field theories with nonabelian and
discrete group of symmetry is investigated. These theories are realized in
terms of free scalar fields starting from the simple $b-c$ systems and scalar
fields on algebraic curves.... | hep-th |
Novel Analysis of Spinor Interactions and non-Riemannian Geometry: A novel analysis of the gauge theory of the local Lorentz group is
implemented both in flat and in curved space-time, and the resulting dynamics
is analyzed in view of the geometrical interpretation of the gauge potential.
The Yang-Mills picture of loca... | hep-th |
On the integrability of Wilson loops in AdS_5 x S^5: Some periodic
ansatze: Wilson loops are calculated within the AdS/CFT correspondence by finding a
classical solution to the string equations of motion in AdS_5 x S^5 and
evaluating its action. An important fact is that this sigma-model used to
evaluate the Wilson l... | hep-th |
Black Holes and U-duality in Diverse Dimensions: In this paper we review some properties of BPS black holes of supergravities
with n=32,16 supersymmetries. The BPS condition, a condition on the eigenvalues
of the central charge matrix, can be shown to be U-duality invariant. We
explicitly work out D=4, N=8 and D=5, N=4... | hep-th |
Quantum Field Theory of Topological Defects as Inhomogeneous Condensates: In the framework of the Closed-Time-Path formalism, we show how topological
defects may arise in Quantum Field Theory as result of a localized
(inhomogeneous) condensation of particles. We demonstrate our approach on two
examples; kinks in the $2... | hep-th |
Derivation of String Field Theory from the Large N BMN Limit: We continue the development of a systematic procedure for deriving closed
string pp wave string field theory from the large N
Berenstein-Maldacena-Nastase limit. In the present paper the effects of the
Yang-Mills interaction are considered in detail for gene... | hep-th |
Renormalization and asymptotic safety in truncated quantum Einstein
gravity: A perturbative quantum theory of the 2-Killing vector reduction of general
relativity is constructed. Although non-renormalizable in the standard sense,
we show that to all orders of the loop expansion strict cut-off independence
can be achi... | hep-th |
An equivalence of two mass generation mechanisms for gauge fields: Two mass generation mechanisms for gauge theories are studied. It is proved
that in the abelian case the topological mass generation mechanism introduced
in hep-th/9301060, hep-th/9512216 is equivalent to the mass generation
mechanism defined in hep-th/... | hep-th |
Anti-de Sitter Space, Thermal Phase Transition, And Confinement In Gauge
Theories: The correspondence between supergravity (and string theory) on $AdS$ space
and boundary conformal field theory relates the thermodynamics of ${\cal N}=4$
super Yang-Mills theory in four dimensions to the thermodynamics of
Schwarzschild... | hep-th |
Integrable N=2 Supersymmetric Field Theories: Some additional references are included on the last 3 pages. | hep-th |
Supersymmetric field theories and geometric Langlands: The other side of
the coin: This note announces results on the relations between the approach of
Beilinson and Drinfeld to the geometric Langlands correspondence based on
conformal field theory, the approach of Kapustin and Witten based on $N=4$ SYM,
and the AGT-... | hep-th |
Algebraic inversion of the Dirac equation for the vector potential in
the non-abelian case: We study the Dirac equation for spinor wavefunctions minimally coupled to an
external field, from the perspective of an algebraic system of linear equations
for the vector potential. By analogy with the method in electromagnet... | hep-th |
Collective Motion of Micro-organisms from Field Theoretical Viewpoint: We analyze the collective motion of micro-organisms in the fluid and consider
the problem of the red tide. The red tide is produced by the condensation of
the micro-organisms, which might be a similar phenomenon to the condensation of
the strings. W... | hep-th |
Momentum space topology of QCD: We discuss the possibility to consider quark matter as the topological
material. We consider hadronic phase (HP), the quark - gluon plasma phase
(QGP), and the hypothetical color - flavor locking (CFL) phase. In those phases
we identify the relevant topological invariants in momentum spa... | hep-th |
Stability of the quantum supermembrane in a manifold with boundary: We point out an effect which may stabilize a supersymmetric membrane moving
on a manifold with boundary, and lead to a light-cone Hamiltonian with a
discrete spectrum of eigenvalues. The analysis is carried out explicitly for a
closed supermembrane in ... | hep-th |
Aspects of critical O$(N)$ model with boundary and defect: In this thesis, we explore the critical phenomena in the presence of extended
objects, which we call defects, aiming for a better understanding of the
properties of non-local objects ubiquitous in our world and a more practical
and realistic study of criticalit... | hep-th |
Observations on Integral and Continuous U-duality Orbits in N=8
Supergravity: One would often like to know when two a priori distinct extremal black
p-brane solutions are in fact U-duality related. In the classical supergravity
limit the answer for a large class of theories has been known for some time.
However, in t... | hep-th |
The Search for the Origins of M Theory : Loop Quantum Mechanics,
Loops/Strings and Bulk/Boundary Dualities: The construction of a $covariant$ Loop Wave functional equation in a 4D
spacetime is attained by introducing a generalized $eleven$ dimensional
categorical {\bf C}-space comprised of $8\times 8$ antisymmetric m... | hep-th |
Some aspects of quantum correlations and decoherence in the cosmological
spacetimes: This thesis presents a theoretical investigation into the quantum field
theoretic aspects of quantum correlations and decoherence in the cosmological
spacetimes. We shall focus on the inflationary or dark energy dominated phase
of th... | hep-th |
$θ$-diagram technique for $\mathcal{N}=1$, $d=4$ superfields: We describe a diagrammatic procedure to carry out the Grassmann integration
in super-Feynman diagrams of 4d theories expressed in terms of $\mathcal{N}=1$
superfields. This method is alternative to the well known $D$-algebra approach.
We develop it in detail... | hep-th |
Holographic description of vacuum bubbles: We discuss a holographic description of vacuum bubbles, with possible
implications for a consistent description of the multiverse. In particular, we
elaborate on the recent observation by Maldacena, that the interior of AdS
bubbles can be described in terms of CFT degrees of f... | hep-th |
Free Fermions at Finite Temperature: An Application of the
Non-Commutative Algebra: Charret et. al. applied the properties of the Grassmann generators to develop
a new method to calculate the coefficients of the high temperature expansion of
the grand canonical partition function of self-interacting fermionic models ... | hep-th |
Cohomology of Lie Superalgebras: Forms, Pseudoforms, and Integral Forms: We study the cohomology of Lie superalgebras for the full complex of forms:
superforms, pseudoforms and integral forms. We use the technique of spectral
sequences to abstractly compute the Chevalley-Eilenberg cohomology. We first
focus on the supe... | hep-th |
The extremal black hole bomb: We analyze the spectrum of massive scalar bound states in the background of
extremal Kerr black holes, focusing on modes in the superradiant regime, which
grow exponentially in time and quickly deplete the black hole's mass and spin.
Previous analytical estimates for the growth rate of thi... | hep-th |
Discrete scale invariance in holography and an argument against the
complexity=action proposal: The AdS/CFT correspondence often motivates research on questions in
gravitational physics whose relevance might not be immediately clear from a
purely GR-perspective, but which are nevertheless interesting. In these
procee... | hep-th |
Positivity, low twist dominance and CSDR for CFTs: We consider a crossing symmetric dispersion relation (CSDR) for CFT four
point correlation with identical scalar operators, which is manifestly
symmetric under the cross-ratios $u,v$ interchange. This representation has
several features in common with the CSDR for quan... | hep-th |
Spacetime Subsystem Symmetries: One characteristic feature of many fractonic lattice models, and a defining
property of the exotic field theories developed to describe them, are subsystem
symmetries including a conservation of not just net electric charge but also
electric dipole moments or charges living on submanifol... | hep-th |
Eikonal phase matrix, deflection angle and time delay in effective field
theories of gravity: The eikonal approximation is an ideal tool to extract classical observables
in gauge theory and gravity directly from scattering amplitudes. Here we
consider effective theories of gravity where in addition to the
Einstein-Hi... | hep-th |
Classicalization and unitarization of wee partons in QCD and Gravity:
The CGC-Black Hole correspondence: We discuss a remarkable correspondence between the description of Black Holes
as highly occupied condensates of $N$ weakly interacting gravitons and that of
Color Glass Condensates (CGCs) as highly occupied gluon ... | hep-th |
Twistorial monopoles & chiral algebras: We initiate the study of how the insertion of magnetically charged states in
4d self-dual gauge theories impacts the 2d chiral algebras supported on the
celestial sphere at asymptotic null infinity, from the point of view of the
4d/2d twistorial correspondence introduced by Coste... | hep-th |
Accelerating Black Holes and Spinning Spindles: We study solutions in the Pleba\'nski--Demia\'nski family which describe an
accelerating, rotating and dyonically charged black hole in $AdS_4$. These are
solutions of $D=4$ Einstein-Maxwell theory with a negative cosmological
constant and hence minimal $D=4$ gauged super... | hep-th |
Algebraic deformations of toric varieties II. Noncommutative instantons: We continue our study of the noncommutative algebraic and differential
geometry of a particular class of deformations of toric varieties, focusing on
aspects pertinent to the construction and enumeration of noncommutative
instantons on these varie... | hep-th |
A Meandering Inflaton: If the cosmological inflationary scenario took place in the cosmic landscape
in string theory, the inflaton, the scalar mode responsible for inflation,
would have meandered in a complicated multi-dimensional potential. We show that
this meandering property naturally leads to many e-folds of infla... | hep-th |
Structure of deformations in Jackiw-Teitelboim black holes with matter: We consider Jackiw-Teitelboim gravity with a massless matter field and turn
on bulk excitations leading to a nontrivial vev of the corresponding dual
boundary operator. To leading order, we realize the corresponding deformation
of thermofield doubl... | hep-th |
$L_\infty$ algebras and Tensor Hierarchies in Exceptional Field Theory
and Gauged Supergravity: We show how the gauge and field structure of the tensor hierarchies in Double
and $E_{7(7)}$ Exceptional Field Theory fits into $L_\infty$ algebras. Special
attention is paid to redefinitions, the role of covariantly const... | hep-th |
How one can obtain unambiguous predictions for the S-matrix in
non-renormalizable theories: The usual Bogolyubov R-operation works in non-renormalizable theories in the
same way as in renormalizable ones. However, in the non-renormalizable case,
the counter-terms eliminating ultraviolet divergences do not repeat the
... | hep-th |
Pure Spinor Superstrings on Generic type IIA Supergravity Backgrounds: We derive the Free Differential Algebra for type IIA supergravity in 10
dimensions in the string frame. We provide all fermionic terms for all
curvatures. We derive the Green-Schwarz sigma model for type IIA superstring
based on the FDA construction... | hep-th |
Vertex algebras and 4-manifold invariants: We propose a way of computing 4-manifold invariants, old and new, as chiral
correlation functions in half-twisted 2d $\mathcal{N}=(0,2)$ theories that
arise from compactification of fivebranes. Such formulation gives a new
interpretation of some known statements about Seiberg-... | hep-th |
Classical Gravity Coupled to Liouville Theory: We consider the two dimensional Jackiw-Teitelboim model of gravity. We first
couple the model to the Liouville action and $c$ scalar fields and show,
treating the combined system as a non linear sigma model, that the resulting
theory can be interpreted as a critical string... | hep-th |
Semiclassical Bethe Ansatz and AdS/CFT: The Bethe ansatz can be used to compute anomalous dimensions in N=4 SYM
theory. The classical solutions of the sigma-model on AdS(5)xS(5) can also be
parameterized by an integral equation of Bethe type. In this note the
relationship between the two Bethe ansaetze is reviewed foll... | hep-th |
Rotating Rotated Branes: We present a class of spacetime rotations that preserve a proportion of
spacetime supersymmetry. We then give the rules for superposing these rotations
with various branes to construct rotating brane solutions which preserve exotic
fractions of supersymmetry. We also investigate the superpositi... | hep-th |
$SO/Sp$ Chern-Simons Gauge Theories At Large $N$, $SO/Sp$ Penner Models
And The Gauge Group Volumes: We construct a deformed $SO/Sp$ Penner generating function responsible for
the close connection between $SO/Sp$ Chern-Simons gauge theories at large $N$
and the $SO/Sp$ Penner models. This construction is then shown t... | hep-th |
Cancellation of soft and collinear divergences in noncommutative QED: In this paper, we investigate the behavior of non-commutative IR divergences
and will also discuss their cancellation in the physical cross sections. The
commutative IR (soft) divergences existing in the non-planar diagrams will be
examined in order ... | hep-th |
Fast scrambling in holographic Einstein-Podolsky-Rosen pair: We demonstrate that a holographic model of the Einstein-Podolsky-Rosen pair
exhibits fast scrambling. Strongly entangled quark and antiquark in
$\mathcal{N}=4$ super Yang-Mills theory are considered. Their gravity dual is a
fundamental string whose endpoints ... | hep-th |
Dual Path Integral: a non-perturbative approach to strong coupling: We develop a non-perturbative method for calculating partition functions of
strongly coupled quantum mechanical systems with interactions between
subsystems described by a path integral of a dual system. The dual path
integral is derived starting from ... | hep-th |
S-matrix on effective string and compactified membrane: Expanding Nambu-Goto action near infinitely long string vacuum one can
compute scattering amplitudes of 2d massless fields representing transverse
string coordinates. As was shown in arXiv:1203.1054, the resulting S-matrix is
integrable, in agreement with the know... | hep-th |
The Conformal Limit of the 0A Matrix Model and String Theory on AdS(2): We analyze the conformal limit of the matrix model describing flux
backgrounds of two dimensional type 0A string theory. This limit is believed to
be dual to an AdS(2) background of type 0A string theory. We show that the
spectrum of this limit is ... | hep-th |
Quantum Mechanics on S^n and Meron Solution: A particle in quantum mechanics on manifolds couples to the induced
topological gauge field that characterises the possible inequivalent
quantizations. For instance, the gauge potential induced on $S^2$ is that of a
magnetic monopole located at the center of $S^2$. We find t... | hep-th |
Finite-size effects of Membranes on AdS_4 x S_7: We consider semi-classical solution of membranes on the AdS_4 x S^7. This is
supposed to be dual to the N=6 super Chern-Simons theory with k=1 in a planar
limit recently proposed by Aharony, Bergmann, Jafferis, and Maldacena (ABJM).
We have identified giant magnon and si... | hep-th |
Hamiltonian structure of three-dimensional gravity in Vielbein formalism: Considering Chern-Simons like gravity theories in three dimensions as first
order systems, we analyze the Hamiltonian structure of three theories
Topological massive gravity, New massive gravity, and Zwei-Dreibein Gravity.We
show that these syste... | hep-th |
Reflections on Virasoro circuit complexity and Berry phase: Recently, the notion of circuit complexity defined in symmetry group
manifolds has been related to geometric actions which generally arise in the
coadjoint orbit method in representation theory and play an important role in
geometric quantization. On the other... | hep-th |
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