abstract stringlengths 3 192k | title stringlengths 4 857 |
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we observe the parallel between the null killing vector on the horizon and degenerate killing vectors at both north and south poles in kerr-taub-nut and general plebanski solutions. this suggests a correspondence between the pairs of the angular momentum/velocity and the nut charge/potential. we treat the time as a rea... | thermodynamics of taub-nut and plebanski solutions |
we consider d1-d5-p states in the untwisted sector of the d1-d5 orbifold cft where one copy of the seed cft has been excited with a left-moving superconformal primary. despite being bps at the orbifold point, such states can `lift' as the theory is deformed away from this point in moduli space. we compute this lifting ... | universal lifting in the d1-d5 cft |
the coon amplitude is the unique solution to duality constraints with logarithmic regge trajectories. a striking feature of this solution is that it interpolates between the veneziano amplitude and a scalar particle amplitude. however, an analytic proof of unitarity of the amplitude is not yet known. in this short note... | on the positivity of coon amplitude in d = 4 |
planck scale modified dispersion relations are one way to capture the influence of quantum gravity on the propagation of fundamental point particles effectively. we derive the time dilation between an observer's or particle's proper time, given by a finslerian length measure induced from a modified dispersion relation,... | reaching the planck scale with muon lifetime measurements |
it has recently been argued that the symmetric orbifold theory of {{t}}^4 is dual to string theory on ads3 × s3 × {{t}}^4 at the tensionless point. at this point in moduli space, the theory possesses a very large symmetry algebra that includes, in particular, a w ∞ algebra capturing the gauge fields of a dual higher sp... | higgsing the stringy higher spin symmetry |
we construct a ultraviolet completion of the bosonic sector of 11-dimensional supergravity motivated by string field theory. we start from a general class of theories characterized by an entire nonpolynomial form factor that allows one to avoid new poles in the propagator and improves the high-energy behavior of the lo... | nonlocal quantum gravity and "m-theory" |
we consider a general class of electrically charged black holes of einstein-maxwell-scalar theory that are holographically dual to conformal field theories at finite charge density which break translation invariance explicitly. we examine the linearised perturbations about the solutions that are associated with the the... | thermoelectric dc conductivities and stokes flows on black hole horizons |
we propose new five-dimensional gauge theory descriptions of six-dimensional n = (1 ,0) superconformal field theories arising from type iia brane configurations includ-ing an on 0-plane. the new five-dimensional gauge theories may have so, sp, and su gauge groups and further broaden the landscape of ultraviolet complet... | more on 5d descriptions of 6d scfts |
by neglecting the self-force, self-energy, and radiative effects, it has been shown that an extremal or near-extremal kerr-newman black hole can turn into a naked singularity when it captures charged and spinning massive particles. a straightforward question then arises: do charged and rotating black holes in string th... | destroying kerr-sen black holes |
we present all-multiplicity evidence that the tree-level s-matrix of gluons and gravitons in heterotic string theory can be reduced to color-ordered single-trace amplitudes of the gauge multiplet. explicit amplitude relations are derived for up to three gravitons, up to two color traces and an arbitrary number of gluon... | amplitude relations in heterotic string theory and einstein-yang-mills |
in this note, we discuss the implications of the weak gravity conjecture (wgc) for general models of large-field inflation with a large number of axions n. we first show that, from the bottom-up perspective, such models admit a variety of different regimes for the enhancement of the effective axion decay constant, depe... | large-field inflation with multiple axions and the weak gravity conjecture |
up-to-date, there is no known example of a classical de sitter solution of string theory, despite several good candidates. we consider here two newly discovered 10d supergravity de sitter solutions, and analyse in great detail whether they can be promoted to classical string backgrounds. to that end, we identify five r... | intricacies of classical de sitter string backgrounds |
after the recent gw170817 event of the two neutron stars merging, many string corrected cosmological theories confronted the non-viability peril. this was due to the fact that most of these theories produce massive gravitons primordially. among these theories were the ones containing a non-minimal kinetic coupling corr... | reviving non-minimal horndeski-like theories after gw170817: kinetic coupling corrected einstein-gauss-bonnet inflation |
we perform non-abelian t-duality for a generic green-schwarz string with respect to an isometry (super)group g, and we derive the transformation rules for the supergravity background fields. specializing to g bosonic, or g fermionic but abelian, our results reproduce those available in the literature. we discuss also c... | non-abelian t-duality and yang-baxter deformations of green-schwarz strings |
we use the machine learning technique to search the polytope which can result in an orientifold calabi-yau hypersurface and the "naive type iib string vacua." we show that neural networks can be trained to give a high accuracy for classifying the orientifold property and vacua based on the newly generated orientifold c... | applying machine learning to the calabi-yau orientifolds with string vacua |
we investigate how super-planckian axions can arise when type iib 3-form flux is used to restrict a two-axion field space to a one-dimensional winding trajectory. if one does not attempt to address notoriously complicated issues like kähler moduli stabilization, susy-breaking and inflation, this can be done very explic... | flat monodromies and a moduli space size conjecture |
we study universality of geometric gauge sectors in the string landscape in the context of f-theory compactifications. a finite time construction algorithm is presented for 4/3 ×2.96 ×10755 f-theory geometries that are connected by a network of topological transitions in a connected moduli space. high probability geome... | algorithmic universality in f-theory compactifications |
we consider string theory vacua with tadpoles for dynamical fields and uncover universal features of the resulting spacetime-dependent solutions. we argue that the solutions can extend only a finite distance ∆ away in the spacetime dimensions over which the fields vary, scaling as ∆n∼t with the strength of the tadpole ... | dynamical tadpoles, stringy cobordism, and the sm from spontaneous compactification |
using matrix product states, we explore numerically the phenomenology of string breaking in a non-abelian lattice gauge theory, namely 1+1 dimensional su(2). the technique allows us to study the static potential between external heavy charges, as traditionally explored by monte carlo simulations, but also to simulate t... | non-abelian string breaking phenomena with matrix product states |
we evaluate the topologically twisted index of a general four-dimensional n=1 gauge theory in the "high-temperature" limit. the index is the partition function for n=1 theories on s 2 × t 2, with a partial topological twist along s 2, in the presence of background magnetic fluxes and fugacities for the global symmetrie... | the cardy limit of the topologically twisted index and black strings in ads5 |
the electric dipole moment (edm) of electron is studied in the supersymmetric a4 modular invariant theory of flavors with cp invariance. the cp symmetry of the lepton sector is broken by fixing the modulus τ. lepton mass matrices are completely consistent with observed lepton masses and mixing angles in our model. in t... | electron edm arising from modulus τ in the supersymmetric modular invariant flavor models |
we study overlaps between two regularized boundary states in conformal field theories. regularized boundary states are dual to end of the world branes in an ads black hole via the ads/bcft. thus they can be regarded as microstates of a single sided black hole. owing to the open-closed duality, such an overlap between t... | spectrum of end of the world branes in holographic bcfts |
we provide a detailed discussion of the main theoretical and phenomenological challenges of quintessence model building in any numerically controlled regime of the moduli space of string theory. we argue that a working quintessence model requires a leading order non-supersymmetric (near) minkowski vacuum with an axioni... | quintessence and the swampland: the numerically controlled regime of moduli space |
the tensionless limit of string theory has recently been formulated in terms of worldsheet rindler physics. in this paper, by considering closed strings moving in background rindler spacetimes, we provide a concrete exemplification of this phenomenon. we first show that strings probing the near-horizon region of a gene... | a rindler road to carrollian worldsheets |
we derive a non-bps linear ansatz using the charged weyl formalism in string and m-theory backgrounds. generic solutions are static and axially-symmetric with an arbitrary number of non-bps sources corresponding to various brane, momentum and kkm charges. regular sources are either four-charge non-extremal black holes ... | non-bps floating branes and bubbling geometries |
we bootstrap n=(1,0) superconformal field theories in six dimensions, by analyzing the four-point function of flavor current multiplets. assuming e 8 flavor group, we present universal bounds on the central charge ctand the flavor central charge cj . based on the numerical data, we conjecture that the rank-one e-string... | carving out the end of the world or (superconformal bootstrap in six dimensions) |
gapped two-dimensional topological phases can feature ungappable edge states which are robust even in the absence of protecting symmetries. in this letter we argue that a multipartite entanglement measure recently proposed in the context of holography, the markov gap, provides a universal diagnostic of ungappable edge ... | universal tripartite entanglement signature of ungappable edge states |
we consider spacetime-dependent solutions to string theory models with tadpoles for dynamical fields, arising from non-trivial scalar potentials. the solutions have necessarily finite extent in spacetime, and are capped off by boundaries at a finite distance, in a dynamical realization of the cobordism conjecture. we s... | dynamical cobordism and swampland distance conjectures |
we construct non-geometric ads4 solutions of iib string theory where the fields in overlapping patches are glued by elements of the s-duality group. we obtain them by suitable quotients of compact and non-compact geometric solutions. the quotient procedure suggests cft duals as quiver theories with links involving the ... | holographic duals of 3d s-fold cfts |
i study the entanglement entropy (ee) across a deformed sphere in conformal field theories (cfts). i show that the sphere (locally) minimizes the universal term in ee among all shapes. in the work of allais and mezei [phys. rev. d 91, 046002 (2015)] it was derived that the sphere is a local extremum, by showing that th... | entanglement entropy across a deformed sphere |
we, for the first time, report a first-principle proof of the equations of state used in the hydrodynamic theory for integrable systems, termed generalized hydrodynamics (ghd). the proof makes full use of the graph theoretic approach to thermodynamic bethe ansatz (tba) that was proposed recently. this approach is purel... | equations of state in generalized hydrodynamics |
generalized dualities had an intriguing incursion into double field theory (dft) in terms of local o(d, d) transformations. we review this idea and use the higher derivative formulation of dft to compute the first order corrections to generalized dualities. our main result is a unified expression that can be easily spe... | generalized dualities and higher derivatives |
it is quite well known that string-inspired axionic terms of the form ν (ϕ )r ∼ r , known also as chern-simons terms, do not affect the scalar perturbations and the background evolution for a flat friedman-robertson-walker universe. in this paper, we study and quantify the implications of the presence of the above term... | f (r ) gravity inflation with string-corrected axion dark matter |
we continue the study of nonrelativistic string theory in background fields. nonrelativistic string theory is described by a nonlinear sigma model that maps a relativistic worldsheet to a non-lorentzian and non-riemannian target space geometry, which is known to be string newton-cartan geometry. we develop the covarian... | background field method for nonlinear sigma models in nonrelativistic string theory |
we investigate geometric aspects of double field theory (dft) and its formulation as a doubled membrane sigma-model. starting from the standard courant algebroid over the phase space of an open membrane, we determine a splitting and a projection to a subbundle that sends the courant algebroid operations to the correspo... | double field theory and membrane sigma-models |
in this work we present new solutions of type iib supergravity based on wrapped d5 branes. we propose that two of these backgrounds are holographically dual to quantum field theories that confine. the high energy regime of the field theories is that of a little string theory. we study various observables (wilson and 't... | confinement and d5 branes |
we show how flux vacua that differ from each other in flux quanta can be seen as different vacua in a single scalar potential of an enlarged field space, which resolves the separation by thin domain walls. this observation, which is motivated by the ads distance conjecture, allows one to compute distances between diffe... | connecting flux vacua through scalar field excursions |
it is widely believed and in part established that exact global symmetries are inconsistent with quantum gravity. one then expects that approximate global symmetries can be quantitatively constrained by quantum gravity or swampland arguments. we provide such a bound for an important class of global symmetries: those ar... | towards a swampland global symmetry conjecture using weak gravity |
we explain the microscopic origin of linear confinement potential with the casimir scaling in generic confining gauge theories. in the low-temperature regime of confining gauge theories such as qcd, polyakov lines are slowly varying haar random modulo exponentially small corrections with respect to the inverse temperat... | color confinement and random matrices -- a random walk down group manifold toward casimir scaling -- |
we uncover new non-supersymmetric boundary conditions in 10- and 11-dimensional supergravity whereby spacetime ends on a smeared distribution of d- and m-branes respectively. for example, we find a solution of type iib supergravity where the ads$_5\times\mathbb{s}^5$ vacuum ends on an $so(6)$-invariant distribution of ... | smeared end-of-the-world branes |
spin matrix theory (smt) limits provide a way to capture the dynamics of the ads/cft correspondence near bps bounds. on the string theory side, these limits result in non-relativistic sigma models that can be interpreted as novel non-relativistic strings. this smt string theory couples to non-relativistic u(1)-galilean... | spin matrix theory string backgrounds and penrose limits of ads/cft |
we study the $n$-point coon amplitude discovered first by baker and coon in the 1970s and then again independently by romans in the 1980s. this baker-coon-romans (bcr) amplitude retains several properties of tree-level string amplitudes, namely duality and factorization, with a $q$-deformed version of the string spectr... | the baker-coon-romans $n$-point amplitude and an exact field theory limit of the coon amplitude |
we review here some aspects of our recent works about the geometric engineering of heterotic little string theories using f-theory. building on the seminal work by aspinwall and morrison as well as intrilligator and blum, we solve some longstanding open questions thanks to recent progress in our understanding of 6d (1,... | 6d heterotic little string theories and f-theory geometry: an introduction |
we compute the subregion entanglement entropy for a doubly holographic black string model. this system consists of a non-gravitating bath and a gravitating brane, where we incorporate dynamic gravity by adding a dgp term. this opens up a new parameter directly extending previous work and raises an important question ab... | entropy of radiation with dynamical gravity |
we consider superstrings on the pure-ramond-ramond ads3 × s3 × t4 background. using the recently-proposed dressing factors for the worldsheet s matrix, we formulate the string hypothesis for the mirror bethe-yang equations, and use it to derive the canonical mirror thermodynamic bethe ansatz (tba) equations of the mode... | mirror thermodynamic bethe ansatz for ads3/cft2 |
the map of half-bps line defects under mirror symmetry has previously been worked out for 3d n = 4 linear quivers with unitary gauge groups, where these defects have a clear realization in terms of a brane picture in type iib string theory. in this work, we initiate the study of line defects and the associated mirror m... | line defects in three dimensional mirror symmetry beyond linear quivers |
we study the borel summation of the gromov-witten potential for the resolved conifold. the stokes phenomena associated to this borel summation are shown to encode the donaldson-thomas (dt) invariants of the resolved conifold, having a direct relation to the riemann-hilbert problem formulated by bridgeland (invent math ... | mathematical structures of non-perturbative topological string theory: from gw to dt invariants |
recently, it has been argued in [1] that jackiw-teitelboim (jt) gravity can be naturally realized in the karch-randall braneworld in (2 + 1) dimensions. using the `complexity=volume' proposal, we studied this model and computed the holographic complexity of the jt gravity from the bulk perspective. we find that the com... | holographic complexity of jackiw-teitelboim gravity from karch-randall braneworld |
we examine symmetries of chiral four-dimensional vacua of type iib flux compactifications with vanishing superpotential w = 0. we find that the n = 1 supersymmetric mssm-like and pati-salam vacua possess enhanced discrete symmetries in the effective action below the mass scale of stabilized complex structure moduli and... | flavor, cp and metaplectic modular symmetries in type iib chiral flux vacua |
we study the compactification of the 𝒩 = 2 ads5 consistent truncation of the conifold, in presence of a betti vector multiplet, on the spindle. we derive the bps equations and solve them at the poles, computing the central charge for both the twist and the anti-twist class, turning on the magnetic charge associated to... | t1,1 truncation on the spindle |
there are various reasons why adding stubs to the vertices of open string field theory (osft) is interesting: the stubs can not only tame certain singularities and make the theory more well-behaved, but also the new theory shares a lot of similarities with closed string field theory, which helps to improve our understa... | open string field theory with stubs |
the determination of the string vertices of closed string field theory is shown to be a conformal field theory problem solvable by combining insights from liouville theory, hyperbolic geometry, and conformal bootstrap. we first demonstrate how strebel differentials arise from hyperbolic string vertices by performing a ... | bootstrapping closed string field theory |
we introduce a method to investigate the static and dynamic properties of both abelian and non-abelian lattice gauge models in 1 +1 dimensions. specifically, we identify a set of transformations that disentangle different degrees of freedom, and apply a simple gaussian variational ansatz to the resulting hamiltonian. t... | variational study of u(1) and su(2) lattice gauge theories with gaussian states in 1 +1 dimensions |
three-dimensional weyl and dirac semimetals can support a chiral-symmetry-breaking, fully gapped, charge-density-wave order even for sufficiently weak repulsive electron-electron interactions, when placed in strong magnetic fields. in the former systems, due to the natural momentum space separation of weyl nodes the or... | magnetic catalysis and axionic charge density wave in weyl semimetals |
we propose a new exact quantization condition for a class of quantum mechanical systems derived from local toric calabi-yau threefolds. our proposal includes all contributions to the energy spectrum which are nonperturbative in the planck constant, and is much simpler than the available quantization condition in the li... | new exact quantization condition for toric calabi-yau geometries |
we study a supersymmetric, rotating, electrically charged black hole in ads4 which is a solution of four-dimensional minimal gauged supergravity. using holography we show that the free energy on s3 and the superconformal index of the dual three-dimensional n = 2 scft, in the planar limit, are related in a simple univer... | universal spinning black holes and theories of class r |
in the spacetime induced by a rotating cosmic string we compute the energy levels of a massive spinless particle coupled covariantly to a homogeneous magnetic field parallel to the string. afterwards, we consider the addition of a scalar potential with a coulomb-type and a linear confining term and completely solve the... | relativistic landau levels in the rotating cosmic string spacetime |
we study the 6d $\mathcal{n}=(1,0)$ superconformal field theory with smallest non-higgsable gauge symmetry $su(3)$. in particular, we propose new 2d gauge theory descriptions of its self-dual strings in the tensor branch. we use our gauge theories to compute the elliptic genera of the self-dual strings, which completel... | 6d strings from new chiral gauge theories |
we consider t [su( n)] and its mirror, and we argue that there are two more dual frames, which are obtained by adding flipping fields for the moment map on the higgs and coulomb branch. turning on a monopole deformation in t [su( n)], and following its effect on each dual frame, we obtain four new daughter theories dua... | flipping the head of t [su( n)]: mirror symmetry, spectral duality and monopoles |
we study the perturbative unitarity of scattering amplitudes in general dimensional reductions of yang-mills theories and general relativity on closed internal manifolds. for the tree amplitudes of the dimensionally reduced theory to have the expected high-energy behavior of the higher-dimensional theory, the masses an... | unitarization from geometry |
we compute the kaluza-klein spectrum of the non-supersymmetric so(3) × so(3)-invariant ads4 vacuum of 11-dimensional supergravity, whose lowest-lying kaluza-klein modes belong to a consistent truncation to 4-dimensional n = 8 supergravity and are stable. we show that, nonetheless, the higher kaluza-klein modes become t... | tachyonic kaluza-klein modes and the ads swampland conjecture |
within the premise of canonical quantisation, we re-examine the quantum structure of bosonic tensionless string theory. in the classical theory, the worldsheet metric degenerates and the bondi-metnzer-sachs (bms) algebra arises as the residual symmetries on fixing the tensionless equivalent of the conformal gauge. in t... | a tale of three — tensionless strings and vacuum structure |
cosmological α -attractor models in n =1 supergravity are based on the hyperbolic geometry of a poincaré disk with the radius square r2=3 α . the predictions for the b modes, r ≈3 α 4/n2, depend on moduli space geometry and are robust for a rather general class of potentials. here we notice that starting with m theory ... | seven-disk manifold, α -attractors, and b modes |
we derive effective actions for parity-violating fluids in both (3 + 1) and (2 + 1) dimensions, including those with anomalies. as a corollary we confirm the most general constitutive relations for such systems derived previously using other methods. we discuss in detail connections between parity-odd transport and und... | global anomalies, discrete symmetries and hydrodynamic effective actions |
we study the effect of the chiral symmetry restoration (csr) on heavy-ion collisions observables in the energy range √{sn n}=3 -20 gev within the parton-hadron-string dynamics (phsd) transport approach. the phsd includes the deconfinement phase transition as well as essential aspects of csr in the dense and hot hadroni... | chiral symmetry restoration in heavy-ion collisions at intermediate energies |
extracting reliable low-energy information from string compactifications notoriously requires a detailed understanding of the uv sensitivity of the corresponding effective field theories. despite past efforts in computing perturbative string corrections to the tree-level action, neither a systematic approach nor a unif... | systematics of the α' expansion in f-theory |
we construct exceptional field theory for the group so(5, 5) based on the extended (6+16)-dimensional spacetime, which after reduction gives the maximal d = 6 supergravity. we present both a true action and a duality-invariant pseudo-action formulations. all the fields of the theory depend on the complete extended spac... | exceptional field theory: so(5,5) |
the gravitational field of a black hole is strongly localized near its horizon when the number of dimensions d is very large. in this limit, we can effectively replace the black hole with a surface in a background geometry (e.g. minkowski or anti-desitter space). the einstein equations determine the effective equations... | effective theory of black holes in the 1/d expansion |
we analyze stationary bps black hole solutions to 4 d n = 2 abelian gauged supergravity. using an appropriate near horizon ansatz, we construct rotating attractors with magnetic flux realizing a topological twist along the horizon surface, for any theory with a symmetric scalar manifold. an analytic flow to asymptotica... | rotating attractors and bps black holes in ads4 |
the emerging study of fractons, a new type of quasi-particle with restricted mobility, has motivated the construction of several classes of interesting continuum quantum field theories with novel properties. one such class consists of foliated field theories which, roughly, are built by coupling together fields support... | fractons and exotic symmetries from branes |
we study the stress tensor four-point function for n = 4 sym with gauge group g = su(n), so(2n + 1), so(2n) or usp(2n) at large n . when g = su(n), the theory is dual to type iib string theory on ads5× s5 with complexified string coupling τs, while for the other cases it is dual to the orbifold theory on ads5× s5/&z;2.... | modular invariant holographic correlators for n = 4 sym with general gauge group |
in the recent study of virasoro action on characters, we discovered that it gets especially simple for peculiar linear combinations of the virasoro operators: particular harmonics of w ^-operators. in this letter, we demonstrate that even more is true: a singlew-constraint is sufficient to uniquely specify the partitio... | matrix model partition function by a single constraint |
we propose a systematic procedure for obtaining all single trace 1/2-bps correlators in n = 4 super yang-mills corresponding to the four-point tree-level amplitude for type iib string theory in ads5 × s5. the underlying idea is to compute generalised contact witten diagrams coming from a 10d effective field theory on a... | towards the virasoro-shapiro amplitude in ads5×s5 |
two remarkable facts about jt two-dimensional dilaton-gravity have been recently uncovered: this theory is dual to an ensemble of quantum mechanical theories; and such ensemble is described by a random matrix model which itself may be regarded as a special (large matter-central-charge) limit of minimal string theory. t... | from minimal strings towards jackiw-teitelboim gravity: on their resurgence, resonance, and black holes |
we show that to cubic order double field theory is encoded in yang-mills theory. to this end we use algebraic structures from string field theory as follows: the l∞-algebra of yang-mills theory is the tensor product k ⊗g of the lie algebra g of the gauge group and a "kinematic algebra" k that is a c∞-algebra. this stru... | the gauge structure of double field theory follows from yang-mills theory |
the minimal geometric deformation (mgd), associated with the 4d schwarzschild solution of the einstein equations, is shown to be a solution of the pure 4d ricci quadratic gravity theory, whose linear perturbations are then implemented by the gregory-laflamme eigentensors of the lichnerowicz operator. the stability of m... | gregory-laflamme analysis of mgd black strings |
we consider the (3 +1 )-dimensional maxwell theory in the situation where going around nontrivial paths in the spacetime involves the action of the duality transformation exchanging the electric field and the magnetic field, as well as its sl (2 ,z ) generalizations. we find that the anomaly of this system in a particu... | anomaly of the electromagnetic duality of maxwell theory |
we study a single-valued integration pairing between differential forms and dual differential forms which subsumes some classical constructions in mathematics and physics. it can be interpreted as a $p$-adic period pairing at the infinite prime. the single-valued integration pairing is defined by transporting the actio... | single-valued integration and double copy |
the framework of exceptional field theory is extended by introducing consistent deformations of its generalised lie derivative. for the first time, massive type iia super-gravity is reproduced geometrically as a solution of the section constraint. this provides a unified description of all ten- and eleven-dimensional m... | the exceptional story of massive iia supergravity |
the string melting version of a multi-phase transport model is often applied to high-energy heavy-ion collisions since the dense matter thus formed is expected to be in parton degrees of freedom. in this work we improve its quark coalescence component, which describes the hadronization of the partonic matter to a hadro... | improved quark coalescence for a multi-phase transport model |
we construct a (locally) supersymmetric worldsheet action for a string in a non-relativistic newton-cartan background. we do this using a doubled string action, which describes the target space geometry in an o( d, d) covariant manner using a doubled metric and doubled vielbeins. by adopting different parametrisations ... | a worldsheet supersymmetric newton-cartan string |
starting with some known localization (matrix model) representations for correlators involving 1/2 bps circular wilson loop w in n = 4 sym theory we work out their 1/n expansions in the limit of large 't hooft coupling λ. motivated by a possibility of eventual matching to higher genus corrections in dual string theory ... | on the structure of non-planar strong coupling corrections to correlators of bps wilson loops and chiral primary operators |
this article reviews some results of the sagex programme that have developed in the understanding of the interplay of supersymmetry and modular covariance of scattering amplitudes in type iib superstring theory and its holographic image in $\mathcal{n}=4$ supersymmetric yang-mills theory (sym). the first section includ... | the sagex review on scattering amplitudes chapter 10: selected topics on modular covariance of type iib string amplitudes and their {n}=4 supersymmetric yang-mills duals |
we study the scattering of massless probes in the vicinity of the photon-sphere of asymptotically ads black holes and horizon-free microstate geometries (fuzzballs). we find that these exhibit a chaotic behaviour characterised by exponentially large deviations of nearby trajectories. we compute the lyapunov exponent λ ... | chaos at the rim of black hole and fuzzball shadows |
we continue our study of the worldsheet theory of superstrings on ads3× s3× 𝕋4 in the tensionless limit [1]. we consider the theory on higher genus surfaces. we give evidence that the worldsheet correlators localise on certain worldsheets that cover the boundary of ads3 holomorphically. this simplifies the string modu... | ads3/cft2 at higher genus |
this work examines non-perturbative dynamics of a 2-dimensional qft by using discrete 't hooft anomaly, semi-classics with circle compactification and bosonization. we focus on charge- q n-flavor schwinger model, and also wess-zumino-witten model. we first apply the recent developments of discrete 't hooft anomaly matc... | fractional θ angle, 't hooft anomaly, and quantum instantons in charge- q multi-flavor schwinger model |
the α'-deformed frame-like double field theory (dft) is a t-duality and gauge invariant extension of dft in which generalized green-schwarz transformations provide a gauge principle that fixes the higher-derivative corrections. it includes all the first order α'-corrections of the bosonic and heterotic string low energ... | the odd story of α'-corrections |
a discrete nonlinear σ -model is obtained by triangulate both the space-time md +1 and the target space k . if the path integral is given by the sum of all the simplicial homomorphisms ϕ :md +1→k (i.e., maps without any topological defects), with an partition function that is independent of space-time triangulation, th... | topological nonlinear σ -model, higher gauge theory, and a systematic construction of 3 + 1 d topological orders for boson systems |
we argue that the confined and deconfined phases in gauge theories are connected by a partially deconfined phase (i.e. su( m) in su( n), where m < n, is deconfined), which can be stable or unstable depending on the details of the theory. when this phase is unstable, it is the gauge theory counterpart of the small bl... | partial deconfinement |
we give evidence that the all genus amplitudes of topological string theory on compact elliptically fibered calabi-yau manifolds can be written in terms of meromorphic jacobi forms whose weight grows linearly and whose index grows quadratically with the base degree. the denominators of these forms have a simple univers... | topological string on elliptic cy 3-folds and the ring of jacobi forms |
recently introduced connections between quantum codes and narain cfts provide a simple ansatz to express a modular-invariant function z (" separators=",τ τ ¯) in terms of a multivariate polynomial satisfying certain additional properties. these properties include algebraic identities, which ensure modular invariance of... | fake z |
we perform a detailed study of perturbations around 2-charge circular fuzz-balls and compare the results with the ones obtained in the case of `small' bhs. in addition to the photon-sphere modes that govern the prompt ring-down, we also find a branch of long-lived qnms localised inside the photon-sphere at the (meta)st... | 2-charge circular fuzz-balls and their perturbations |
for yang-mills theories in four dimensions, we propose to rescale the ratio between topological susceptibility and string tension squared in a universal way, dependent only on group factors. we apply this suggestion to su (nc) and sp (nc) groups, and compare lattice measurements performed by several independent collabo... | color dependence of the topological susceptibility in yang-mills theories |
we study the topological properties of calabi-yau threefold hypersurfaces at large $h^{1,1}$. we obtain two million threefolds $x$ by triangulating polytopes from the kreuzer-skarke list, including all polytopes with $240 \le h^{1,1}\le 491$. we show that the kähler cone of $x$ is very narrow at large $h^{1,1}$, and as... | the kreuzer-skarke axiverse |
holography can provide a microscopic interpretation of a gravitational solution as corresponding to a particular cft state: the asymptotic expansion in gravity encodes the expectation values of operators in the dual cft state. such a correspondence is particularly valuable in black hole physics. we study supersymmetric... | a ds3 holography at dimension two |
when n m5 branes coincide on an a type singularity, ℂ2 /&z; k , there is a multitude of tensionless strings which arise in the spectrum. the low energy theory when all m5 branes are separated at the singularity is given by a linear quiver with parameters n and k. the theory has a multitude of phases, as many as partiti... | discrete gauging in six dimensions |
we construct higher dimensional euclidean ads wormhole solutions that reproduce the statistical description of the correlation functions of an ensemble of heavy cft operators. we consider an operator which effectively backreacts on the geometry in the form of a thin shell of dust particles. assuming dynamical chaos in ... | wormholes from heavy operator statistics in ads/cft |
string theory on ads 3 backgrounds arises as an ir limit of little string theory on ns5-branes. a wide variety of holographic rg flows from the fivebrane theory in the uv to (orbifolds of) ads 3 in the ir is amenable to exact treatment in worldsheet string theory as a class of null-gauged wzw models. the condensate of ... | string theory of supertubes |
we provide explicit holographic duals of m5-branes wrapped on a sphere with one irregular puncture and one regular puncture of arbitrary type. the solutions generalise the solutions corresponding to m5-branes wrapped on a disc recently constructed by bah-bonetti-minasian-nardoni by allowing for a general choice of regu... | holographic duals of m5-branes on an irregularly punctured sphere |
we discuss a strategy to construct gapped boundaries for a large class of symmetry-protected topological phases (spt phases) beyond group cohomology. this is done by a generalization of the symmetry extension method previously used for cohomo- logical spt phases. we find that this method allows us to construct gapped b... | on gapped boundaries for spt phases beyond group cohomology |
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