abstract stringlengths 3 192k | title stringlengths 4 857 |
|---|---|
we systemically study the hecke relations and the c = 8k coset relations among 2d rational conformal field theories (rcfts) with up to seven characters. we propose that the characters of any 2d rcft — unitary or non-unitary — satisfying a holomorphic modular linear differential equation (mlde) can be realized as either... | hecke relations, cosets and the classification of 2d rcfts |
we determine the masses, the singlet and octet decay constants as well as the anomalous matrix elements of the η and η' mesons in nf = 2 + 1 qcd. the results are obtained using twenty-one cls ensembles of non-perturbatively improved wilson fermions that span four lattice spacings ranging from a ≈ 0.086 fm down to a ≈ 0... | masses and decay constants of the η and η' mesons from lattice qcd |
a brief introduction of the relationship of string percolation to the quantum chromo dynamics (qcd) phase diagram is presented. the behavior of the polyakov loop close to the critical temperature is studied in terms of the color fields inside the clusters of overlapping strings, which are produced in high energy hadron... | de-confinement and clustering of color sources in nuclear collisions |
after about two decades of the first observational papers confirming the accelerated expansion of the universe, we are still facing the question whether the cause of it is a rigid cosmological constant $\lambda$-term or a mildly evolving dynamical dark energy (dde). while studies focusing mainly on cmb measurements do ... | dynamical dark energy versus $\\lambda=$const. in light of observations |
we analyze the bps equations in the "superstratum sector" of three-dimensional gauged supergravity. we obtain multi-parameter supersymmetric solutions that include elliptical deformations of the supertubes that underlie standard superstrata. we uplift the three-dimensional solutions to obtain the corresponding six-dime... | elliptical and purely ns superstrata |
in this review, a number of approaches to superstring cosmology which make use of key features which distinguish string theory from point particle theories are discussed, with particular emphasis on emergent scenarios. one motivation for the discussion is the realization that, in order to describe the evolution of the ... | superstring cosmology - a complementary review |
we propose new formulae for the two-loop n-point d-dimensional integrands of scattering amplitudes in yang-mills theory and gravity. the loop integrands are written as a double-forward limit of tree-level trivalent diagrams, and are inferred from the formalism of the two-loop scattering equations. we discuss the relati... | two-loop scattering amplitudes: double-forward limit and colour-kinematics duality |
mason and skinner proposed the ambitwistor string theory which directly reproduces the formulas for the amplitudes of massless particles proposed by cachazo, he and yuan. in this paper we discuss geometries of the moduli space of worldsheets associated to the bosonic or the rns ambitwistor string. further, we investiga... | worldsheet geometries of ambitwistor string |
we construct exceptional field theory for the duality group sl(3) × sl(2). the theory is defined on a space with 8 `external' coordinates and 6 `internal' coordinates in the (3, 2) fundamental representation, leading to a 14-dimensional generalized spacetime. the bosonic theory is uniquely determined by gauge invarianc... | tensor hierarchy and generalized cartan calculus in sl(3) × sl(2) exceptional field theory |
by employing the new ultraspinning limit we construct novel classes of black holes with non-compact event horizons and finite horizon area and study their thermo-dynamics. our ultraspinning limit can be understood as a simple generating technique that consists of three steps: i) transforming the known rotating ads blac... | ultraspinning limits and super-entropic black holes |
the statistics of the supersymmetry breaking scale in the string landscape has been extensively studied in the past finding either a power-law behaviour induced by uniform distributions of f-terms or a logarithmic distribution motivated by dynamical supersymmetry breaking. these studies focused mainly on type iib flux ... | moduli stabilisation and the statistics of susy breaking in the landscape |
we study the recently proposed ads7/cft6 dualities for a class of 6d n = (1, 0) theories that flow on the tensor branch to long linear quiver gauge theories. we find a precise agreement in the symmetries and in the spectrum of charged states between the 6d scfts and their conjectured ads7 duals. we also confirm a recen... | charges and holography in 6d (1,0) theories |
in this note, we study the swampland distance conjecture in tcs g2 manifold compactifications of m-theory. in particular, we are interested in testing a refined version — the emergent string conjecture, in settings with 4d n = 1 supersymmetry. we find that a weakly coupled, tensionless fundamental heterotic string does... | on tcs g2 manifolds and 4d emergent strings |
the ads3/cft2 correspondence features massless non-relativistic modes on the string worldsheet in lightcone gauge. we study in detail these excitations and highlight how they naturally split between chiral (left-moving) and anti-chiral (right-moving) representations. in light of this split we discuss the constraints on... | massless s matrices for ads3/cft2 |
we establish a formal bridge between qubit-based and photonic quantum computing. we do this by defining a functor from the zx calculus to linear optical circuits. in the process we provide a compositional theory of quantum linear optics which allows to reason about events involving multiple photons such as those requir... | quantum linear optics via string diagrams |
we show that the two-point tree level amplitude in string theory in flat space is given by the standard free particle expression. | two-point string amplitudes |
we investigate reinforcement learning and genetic algorithms in the context of heterotic calabi-yau models with monad bundles. both methods are found to be highly efficient in identifying phenomenologically attractive three-family models, in cases where systematic scans are not feasible. for monads on the bi-cubic cala... | string model building, reinforcement learning and genetic algorithms |
in theories with a perturbatively massless 2-form (dual to an axion), a paradox may arise in the process of black hole evaporation. schwarzschild black holes can support a non-trivial wilson-line-type field, the integral of the 2-form around their horizon. after such an `axionic black hole' evaporates, the wilson line ... | the weak gravity conjecture and the axionic black hole paradox |
we present a formulation of double field theory with a drinfeld double as extended spacetime. it makes poisson-lie t-duality (including abelian and non-abelian t-duality as special cases) manifest. this extends the scope of possible applications of the theory, which so far captured abelian t-duality only, considerably.... | poisson-lie t-duality in double field theory |
we describe global embeddings of fractional d3 branes at orientifolded singularities in type iib flux compactifications. we present an explicit calabi-yau example where the chiral visible sector lives on a local orientifolded quiver while non-perturbative effects, α' corrections and a t-brane hidden sector lead to full... | global orientifolded quivers with inflation |
if the inflationary phase lasted longer than the minimal period, the length scales observed today originated from modes that were smaller than the planck length during inflation. it was recently argued that this "trans-planckian problem" can never arise in a consistent string theory framework, which places a stringent ... | trans-planckian censorship, inflation, and dark matter |
in a spontaneously dimerized quantum antiferromagnet, spin-1 /2 excitations (spinons) are confined in pairs by strings akin to those confining quarks in non-abelian gauge theories. the system has multiple degenerate ground states (vacua) and domain walls between regions of different vacua. for two vacua, we demonstrate... | confinement in the bulk, deconfinement on the wall: infrared equivalence between compactified qcd and quantum magnets |
this paper is an extended version of our short letter on a new proposal for holographic boundary conformal field, i.e., bcft. by using the penrose-brown-henneaux (pbh) transformation, we successfully obtain the expected boundary weyl anomaly. the obtained boundary central charges satisfy naturally a c-like theorem holo... | on new proposal for holographic bcft |
recent progress on scattering amplitudes in super yang-mills and super-string theory benefitted from the use of multiparticle superfields. they universally capture tree-level subdiagrams, and their generating series solve the non-linear equations of ten-dimensional super yang-mills. we provide simplified recursions for... | non-linear gauge transformations in d = 10 sym theory and the bcj duality |
recent work has established a uniform characterization of most 6d scfts in terms of generalized quivers with conformal matter. compactification of the partial tensor branch deformation of these theories on a t2 leads to 4d n = 2 scfts which are also generalized quivers. taking products of bifundamental conformal matter... | 6d scfts, 4d scfts, conformal matter, and spin chains |
we compute energy gaps and study infalling massive geodesic probes in the new families of scaling, microstate geometries that have been constructed recently and for which the holographic duals are known. we find that in the deepest geometries, which have the lowest energy gaps, the geodesic deviation shows that the str... | tidal stresses and energy gaps in microstate geometries |
we study the t-μ phase diagram of anisotropic media, created in heavy-ion collisions (hic). such a statement of the problem is due to several indications that this media is anisotropic just after hic. to study t-μ phase diagram we use holographic methods. to take into account the anisotropy we use an anisotropic black ... | orientation dependence of confinement-deconfinement phase transition in anisotropic media |
we formulate a strategy for computing the complete set of non-perturbative corrections to closed string scattering in c = 1 string theory from the worldsheet perspective. this requires taking into account the effect of multiple zz-instantons, including higher instantons constructed from zz boundary conditions of type (... | multi-instanton calculus in c = 1 string theory |
we study gravitational waves propagating on a warped minkowski space-time with d - 4 compact extra dimensions. while kaluza-klein scales are typically too high for any current detection, we analyse how the warp factor changes the kaluza-klein spectrum of gravitational waves. to that end we provide a complete and explic... | gravitational waves in warped compactifications |
we develop a nonperturbative theory for hole dynamics in antiferromagnetic spin lattices, as described by the t -j model. this is achieved by generalizing the self-consistent born approximation to nonequilibrium systems, making it possible to calculate the full time-dependent many-body wave function. our approach revea... | nonequilibrium hole dynamics in antiferromagnets: damped strings and polarons |
we study the soft behavior of two seemingly different particles that are both referred to as dilatons in the literature, namely the one that appears in theories of gravity and in string theory and the nambu-goldstone boson of spontaneously broken conformal invariance. our primary result is the discovery of a soft theor... | new soft theorems for the gravity dilaton and the nambu-goldstone dilaton at subsubleading order |
we consider the well-known solution of the heterotic superstring effective action to zeroth order in α ' that describes the intersection of a fundamental string with momentum and a solitonic 5-brane and which gives a 3-charge, static, extremal, supersymmetric black hole in 5 dimensions upon dimensional reduction on t5.... | α '-corrected black holes in string theory |
we present a 6d generalization of the fractional quantum hall effect involving membranes coupled to a three-form potential in the presence of a large background four-form flux. the low energy physics is governed by a bulk 7d topological field theory of abelian three-form potentials with a single derivative chern-simons... | 6d fractional quantum hall effect |
lorentzian correlators of local operators exhibit surprising singularities in theories with gravity duals. these are associated with null geodesics in an emergent bulk geometry. we analyze singularities of the thermal response function dual to propagation of waves on the ads schwarzschild black hole background. we deri... | black hole bulk-cone singularities |
positivity bounds coming from consistency of uv scattering amplitudes are not always sufficient to prove the weak gravity conjecture for theories beyond einstein-maxwell. additional ingredients about the uv may be necessary to exclude those regions of parameter space which are naïvely in conflict with the predictions o... | duality and supersymmetry constraints on the weak gravity conjecture |
we review how core structures of string/m‑theory emerge as higher structures in super homotopy theory; namely from systematic analysis of the brane bouquet of universal invariant higher central extensions growing out of the superpoint. since super homotopy theory is immensely rich, to start with we consider this in the... | the rational higher structure of m‑theory |
we ask to what extent are the higher-derivative corrections of string theory constrained by t-duality. the seminal early work by meissner tests t-duality by reduction to one dimension using a distinguished choice of field variables in which the bosonic string action takes a gauss-bonnet-type form. by analyzing all fiel... | t-duality constraints on higher derivatives revisited |
we explore the notion of isometries in non-riemannian geometries. such geometries include and generalise the backgrounds of non-relativistic string theory, and they can be naturally described using the formalism of double field theory. adopting this approach, we first solve the corresponding killing equations for const... | non-riemannian isometries from double field theory |
by using ads /cft , we study the critical electric field, the schwinger pair creation rate and the potential phase diagram for the quark and antiquark in four confining supergravity backgrounds which are the witten qcd (wqcd), the maldacena-nunez (mn), the klebanov-tseytlin (kt) and the klebanov-strassler (ks) models. ... | schwinger effect and entanglement entropy in confining geometries |
we give an overview of moduli stabilization in compactifications of string theory. we summarize current methods for construction and analysis of vacua with stabilized moduli, and we describe applications to cosmology and particle physics. this is a contribution to the handbook of quantum gravity. | moduli stabilization in string theory |
we investigate the existence of $\frac18$-bps black hole microstates in type iib string theory on $\mathrm{ads}_5 \times \mathrm{s}^5$. as will be explained, these states are in one-to-one correspondence with the schur operators comprising the chiral algebra of $\mathcal{n}=4$ super-yang-mills, and a conjecture of beem... | on $\\frac18$-bps black holes and the chiral algebra of $\\mathcal{n}=4$ sym |
the three tachyon-free non-supersymmetric string theories in ten dimensions provide a handle on quantum gravity away from the supersymmetric lamppost. however, they have not been shown to be fully consistent; although local anomalies cancel due to versions of the green-schwarz mechanism, there could be global anomalies... | global anomalies & bordism of non-supersymmetric strings |
if dark matter is an axion-like-particle a significant fraction of the present day relic abundance could be concentrated in compact gravitationally bound miniclusters. we study the minicluster masses compatible with the dark matter relic density constraint. if they form from fluctuations produced by pq symmetry breakin... | miniclusters in the axiverse |
we propose novel functional equations for the bps partition functions of 6d (1, 0) scfts, which can be regarded as an elliptic version of göttsche-nakajima-yoshioka's k-theoretic blowup equations. from the viewpoint of geometric engineering, these are the generalized blowup equations for refined topological strings on ... | blowup equations for 6d scfts. part i |
in this note we study two point functions of coulomb branch chiral ring elements with large r-charge, in quantum field theories with n=2 superconformal symmetry in four spacetime dimensions. focusing on the case of one-dimensional coulomb branch, we use the effective-field-theoretic methods of [1], to estimate the two-... | on the large r-charge expansion in n=2 superconformal field theories |
given a gapped boundary of a (3 +1 ) -dimensional [(3 +1 )d ] topological order (to), one can stack on it a decoupled (2 +1 )d to to get another boundary theory. should one view these two boundaries as "different"? a natural choice would be no. different classes of gapped boundaries of (3 +1 )d to should be defined mod... | gapped boundaries of (3 +1 ) -dimensional topological order |
it was demonstrated that a string probe falling radially within a superstratum geometry would experience tidal forces. these tidal forces were shown to excite the string by converting its kinetic energy into stringy excitations. using the ads/cft correspondence we seek to understand this behavior from the perspective o... | the dual of a tidal force in the d1d5 cft |
we generalize a construction of coherent state operators describing various giant graviton branes. we enlarge the coherent state parameters, by including complementary coherent state parameters, to describe a system of dual giants and giants. one of the advantages of using complementary coherent state parameters is tha... | coherent state operators, giant gravitons, and gauge-gravity correspondence |
we study the non-perturbative superpotential generated by d(-1)-branes in type iib compactifications on orientifolds of calabi-yau threefold hypersurfaces. to compute the d-instanton superpotential, we study f-theory compactification on toric complete intersection elliptic calabi-yau fourfolds. we take the sen-limit, b... | d-instanton superpotential in string theory |
we construct large n saddle points of the matrix model for the n = 4 yang- mills index dual to the bps black holes in ads5 × s5, in two different setups. when the two complex chemical potentials for the angular momenta are collinear, we find linear eigenvalue distributions which solve the large n saddle point equation.... | exact qft duals of ads black holes |
microstrata are the non-extremal analogues of superstrata: they are smooth, non-extremal (non-bps) solitonic solutions to iib supergravity whose deep-throat limits approximate black holes. using perturbation theory and numerical methods, we construct families of solutions using a consistent truncation to three-dimensio... | microstrata |
we propose a top-down approach to non-invertible symmetries in 2d qfts and their associated symmetry topological field theories. we focus on the gauge theory engineered on d1-branes probing a particular calabi-yau 4-fold singularity. we show how to derive the symmetry topological field theory, a 3d dijkgraaf-witten the... | non-invertible symmetries in 2d from type iib string theory |
recently, it has been realized that liquids are able to support solid-like transverse modes with an interesting gap in momentum space developing in the dispersion relation. we show that this gap is also present in simple holographic bottom-up models, and it is strikingly similar to the gap in liquids in several respect... | low frequency propagating shear waves in holographic liquids |
starobinsky inflation is currently one of the best models concerning agreement with cosmological data. despite this observational success, it is still lacking a robust embedding into a uv complete theory. previous efforts to derive starobinsky inflation from string theory have been based on the derivation of higher der... | starobinsky inflation from string theory? |
the pauli strings appearing in the decomposition of an operator can be can be grouped into commuting families, reducing the number of quantum circuits needed to measure the expectation value of the operator. we detail an algorithm to completely partition the full set of pauli strings acting on any number of qubits into... | fast partitioning of pauli strings into commuting families for optimal expectation value measurements of dense operators |
the low-energy expansion of closed-string scattering amplitudes at genus one introduces infinite families of non-holomorphic modular forms called modular graph forms. their differential and number-theoretic properties motivated brown's alternative construction of non-holomorphic modular forms in the recent mathematics ... | modular graph forms from equivariant iterated eisenstein integrals |
we explore the viability of fuzzballs as candidate microstate geometries for the black hole and their possible role in resolutions of the information paradox. we argue that if fuzzballs provide a description of black-hole microstates then the typical fuzzball geometry can only differ significantly from the conventional... | critique of the fuzzball program |
scalar-tensor theories with the shift symmetries required by light scalars are well-explored modifications to gr. for these, two-derivative scalar self-interactions usually dominate at low energies and interestingly compete with the two-derivative metric interactions of gr itself. although much effort has been invested... | axio-chameleons: a novel string-friendly multi-field screening mechanism |
we propose an analog quantum simulator for simulating real time dynamics of $(1+1)$-d non-abelian gauge theory well within the existing capacity of ultracold atom experiments. the scheme calls for the realization of a two-state ultracold fermionic system in a 1-dimensional bipartite lattice, and the observation of subs... | cold atom quantum simulator for string and hadron dynamics in non-abelian lattice gauge theory |
we examine the behavior of the ramond ground states in the d1-d5 cft after a deformation of the free-orbifold sigma model on target space (t4)n/sn by a marginal interaction operator. these states are compositions of ramond ground states of the twisted and untwisted sectors. they are characterized by a conjugacy class o... | on the dynamics of protected ramond ground states in the d1-d5 cft |
adopting noether point symmetries, we classify and integrate dynamical systems coming from horndeski cosmologies. the method is particularly effective both to select the form of horndeski models and to derive exact cosmological solutions. starting from the lagrangians selected by the noether symmetries, it is possible ... | classification of the horndeski cosmologies via noether symmetries |
a new class of higher-spin gauge theories associated with various coxeter groups is proposed. the emphasize is on the bp -models. the cases of b 1 and its infinite graded-symmetric product sym (× b 1)∞ correspond to the usual higher-spin theory and its multi-particle extension, respectively. the multi-particle b 2-high... | from coxeter higher-spin theories to strings and tensor models |
no-scale supergravity is the appropriate general framework for low-energy effective field theories derived from string theory. the simplest no-scale kähler potential with a single chiral field corresponds to a compactification to flat minkowski space with a single volume modulus, but generalizations to single-field no-... | de sitter vacua in no-scale supergravity |
we study top-down embeddings of massive anti-de sitter (ads) gravity in type-iib string theory. the supergravity solutions have a ads4 fiber warped over a manifold m6 whose shape resembles that of scottish bagpipes: the `bag' is a conventional ads4 compactification manifold, while the `pipes' are highly-curved semi-inf... | massive anti-de sitter gravity from string theory |
we propose a new model which simulates the motion of free electrons in graphene by the evolution of strings on manifolds. in this model, molecules which constitute sheets of graphene are polygonal point-like structures which build (n + 1) -dimensional manifolds. by breaking the gravitational-analogue symmetry of graphe... | constructing superconductors by graphene chern-simons wormholes |
we show that the 4dn = 1 su(3) nf = 6 sqcd is the model obtained when compactifying the rank one e-string theory on a three punctured sphere (a trinion) with a particular value of flux. the su(6) × su(6) × u(1) global symmetry of the theory, when decomposed into the su(2)3× u(1)3× su(6) subgroup, corresponds to the thr... | sqcd and pairs of pants |
whenever available, refined bps indices provide considerably more information on the spectrum of bps states than their unrefined version. extending earlier work on the modularity of generalized donaldson-thomas invariants counting d4-d2-d0 brane bound states in type iia strings on a calabi-yau threefold y , we construc... | s-duality and refined bps indices |
we propose a picture for the uv properties of galileon field theories. we conjecture that galileons, and all theories incorporating the vainshtein mechanism, fall into jaffe's class of `non-localizable' field theories characterized by an exponential growth in their kallen-lehmann spectral densities. similar properties ... | uv properties of galileons: spectral densities |
we study the gravity-mediated scattering of scalar fields based on a parameterization of the lorentzian quantum effective action. we demonstrate that the interplay of infinite towers of spin zero and spin two poles at imaginary squared momentum leads to scattering amplitudes that are compatible with unitarity bounds, c... | finite quantum gravity amplitudes: no strings attached |
the quest to find a nonperturbative formulation of topological string theory has recently seen two unrelated developments. on the one hand, via quantization of the mirror curve associated to a toric calabi-yau background, it has been possible to give a nonperturbative definition of the topological-string partition func... | resurgence matches quantization |
in previous works, we have derived a running vacuum model (rvm) for a string universe, which provides an effective description of the evolution of 4-dimensional string-inspired cosmologies from inflation till the present epoch. in the context of this "stringy rvm" version, it is assumed that the early universe is chara... | stringy-running-vacuum-model inflation: from primordial gravitational waves and stiff axion matter to dynamical dark energy |
we study the discrete flows generated by the symmetry group of the bps quivers for calabi-yau geometries describing five dimensional superconformal quantum field theories on a circle. these flows naturally describe the bps particle spectrum of such theories and at the same time generate bilinear equations of q-differen... | bps quivers of five-dimensional scfts, topological strings and q-painlevé equations |
in perturbative amplitudes in quantum field theory and string field theory, cutkosky rule expresses the anti-hermitian part of a feynman diagram in terms of sum over all its cut diagrams, and this in turn is used to prove unitarity of the theory. for d-instanton contribution to a string theory amplitude, the cutting ru... | cutkosky rules and unitarity (violation) in d-instanton amplitudes |
complex bound states of magnetic excitations, known as bethe strings, were predicted almost a century ago to exist in one-dimensional quantum magnets1. the dispersions of the string states have so far remained the subject of intense theoretical studies2-7. here, by performing neutron scattering experiments on the one-d... | dispersions of many-body bethe strings |
we find an exact type iib supergravity solution that represents a one-parameter deformation of the t-dual of the ads 5 × s 5 background (with t-duality applied in all 6 abelian bosonic isometric directions). the non-trivial fields are the metric, dilaton and rr 5-form only. the latter has remarkably simple "undeformed"... | type iib supergravity solution for the t-dual of the η-deformed ads 5 × s 5 superstring |
we propose a geometric characterisation of the topological string partition functions associated to the local calabi-yau (cy) manifolds used in the geometric engineering of $d=4$, $\mathcal{n}=2$ supersymmetric field theories of class $\mathcal{s}$. a quantisation of these cy manifolds defines differential operators ca... | from quantum curves to topological string partition functions ii |
we use the dictionary between general field theories and strongly homotopy algebras to provide an algebraic formulation of the procedure of integrating out of degrees of freedom in terms of homotopy transfer. this includes more general effective theories in which some massive modes are kept while other modes of a compa... | homotopy transfer and effective field theory i: tree-level |
in this note, we introduce and study a new class of "half integrands" in cachazo-he-yuan (chy) formula, which naturally generalize the so-called parke-taylor factors; these are dubbed cayley functions as each of them corresponds to a labelled tree graph. the chy formula with a cayley function squared gives a sum of fey... | labelled tree graphs, feynman diagrams and disk integrals |
we define hecke operators on vector-valued modular forms of the type that appear as characters of rational conformal field theories (rcfts). these operators extend the previously studied galois symmetry of the modular representation and fusion algebra of rcfts to a relation between rcft characters. we apply our results... | hecke relations in rational conformal field theory |
we use a microcanonical path integral closely related to that introduced by brown and york in 1992 to add new entries to the ads/cft dictionary concerning the interiors of small black holes. stationary points of such path integrals are also stationary points of more standard canonical-type path integrals with fixed bou... | microcanonical path integrals and the holography of small black hole interiors |
we formulate a two-parameter generalization of the geometric langlands correspondence, which we prove for all simply-laced lie algebras. it identifies the q-conformal blocks of the quantum affine algebra and the deformed w-algebra associated to two langlands dual lie algebras. our proof relies on recent results in quan... | quantum q-langlands correspondence |
we consider supergravity theories with 16 supercharges in minkowski space with dimensions d >3 . we argue that there is an upper bound on the number of massless modes in such theories depending on d . in particular, we show that the rank of the gauge symmetry group g in d dimensions is bounded by rg≤26 -d . this in ... | four-dimensional n =4 sym theory and the swampland |
several swampland conjectures suggest that there is a critical field range beyond which the effective field theory (eft) description breaks down in quantum gravity. in applications of these conjectures, however, the field range of interest is the field space distance traced by the physical trajectory that solves the eq... | mass hierarchies and dynamical field range |
we discuss the nature of quantum field theories involving gravity that are classically scale-invariant. we show that gravitational radiative corrections are crucial in the determination of the nature of the vacuum state in such theories, which are renormalisable, technically natural, and can be asymptotically free in a... | naturalness and dimensional transmutation in classically scale-invariant gravity |
establishing an explicit connection between the long distance physics of confinement and the dynamical interactions of quarks and gluons at short distances has been a long-sought goal of quantum chromodynamics. using holographic qcd, we derive a direct analytic relation between the scale κ which determines the masses o... | connecting the hadron mass scale to the fundamental mass scale of quantum chromodynamics |
in this paper, we investigate the theory of dynamical axion strings emerging from chiral symmetry breaking in three-dimensional weyl semimetals. the chiral symmetry is spontaneously broken by a charge density wave (cdw) order which opens an energy gap and converts the weyl semimetal into an axion insulator. indeed, the... | response properties of axion insulators and weyl semimetals driven by screw dislocations and dynamical axion strings |
we use insights from superstring field theory to prove the subleading soft graviton theorem for tree amplitudes of (compactified) heterotic and type ii string theories for arbitrary number of finite energy ns (nsns) sector external states but only one soft graviton. we also prove the leading soft graviton theorem in th... | soft theorems in superstring theory |
string theory provides a compact integral expression for the tree-level scattering amplitude of an arbitrary number of light strings. we focus on amplitudes involving a few tachyons and many photons, with a special choice of polarizations and kinematics. we pick out a particular pole in the amplitude—one corresponding ... | chaos in a many-string scattering amplitude |
we investigate whether an accelerating universe can be realized as an asymptotic late-time solution of friedmann-lemaître-robertson-walker (flrw)-cosmology with multifield multiexponential potentials. late-time cosmological solutions exhibit a universal behavior which enables us to bound the rate of time variation of t... | accelerating universe at the end of time |
in this paper we study in detail the deformations introduced in [1] of the integrable structures of the ads2,3 integrable models. we do this by embedding the corresponding scattering matrices into the most general solutions of the yang-baxter equation. we show that there are several non-trivial embeddings and correspon... | integrable deformations of ads/cft |
we examine the weyl double copy relation for vacuum solutions of the einstein equations with a cosmological constant using the approach we previously described, in which the spin-1/2 massless free-field spinors (dirac-weyl fields) are regarded as basic units. based on the exact non-twisting vacuum type n and vacuum typ... | the weyl double copy in vacuum spacetimes with a cosmological constant |
the origin of the graviton from string theory is well understood: it corresponds to a massless state in closed string spectra, whose low-energy effective action, as extracted from string scattering amplitudes, is that of einstein-hilbert. in this work, we explore the possibility of such a string-theoretic emergence of ... | extracting bigravity from string theory |
the greybody factor from the black string in the de rham-gabadadze-tolley (drgt) massive gravity theory is investigated in this study. the drgt massive gravity theory is one of the modified gravity theories used in explaining the current acceleration in the expansion of the universe. through the use of cylindrical symm... | greybody factor for black string in drgt massive gravity |
a procedure is described to construct generalised scherk-schwarz uplifts of gauged supergravities. the internal manifold, fluxes, and consistent truncation ansatz are all derived from the embedding tensor of the lower-dimensional theory. we first describe the procedure to construct generalised leibniz parallelisable sp... | generalised scherk-schwarz reductions from gauged supergravity |
we consider four-dimensional n=1 supergravity models of a kind appearing in string flux compactifications. it has been recently shown that, by using double three-form multiplets instead of ordinary chiral multiplets, one can promote to dynamical variables (part of) the quantized numbers appearing in the flux-induced su... | three-forms, dualities and membranes in four-dimensional supergravity |
this introductory paper studies a class of real analytic functions on the upper half plane satisfying a certain modular transformation property. they are not eigenfunctions of the laplacian and are quite distinct from maass forms. these functions are modular equivariant versions of real and imaginary parts of iterated ... | a class of non-holomorphic modular forms i |
we test the refined swampland distance conjecture in the kähler moduli space of exotic one-parameter calabi-yaus. we focus on examples with pseudo-hybrid points. these points, whose properties are not well-understood, are at finite distance in the moduli space. we explicitly compute the lengths of geodesics from such p... | refined swampland distance conjecture and exotic hybrid calabi-yaus |
the homogeneous inviscid burgers equation which determines the spectrum of a ttbar deformed model has a natural interpretation as the condition of the gauge invariance of the target space-time energy and momentum of a (non-critical) string theory quantised in a generalised uniform light-cone gauge which depends on the ... | ttbar deformation and the light-cone gauge |
we study an 't hooft anomaly of massless qcd at finite temperature. with the imaginary baryon chemical potential at the roberge-weiss point, there is a &z;2 symmetry which can be used to define confinement. we show the existence of a mixed anomaly between the &z;2 symmetry and the chiral symmetry, which gives a strong ... | anomaly matching in qcd thermal phase transition |
recent developments have revealed a new phenomenon, i.e. the residues of the poles of the holographic retarded two point functions of generic operators vanish at certain complex values of the frequency and momentum. this so-called pole-skipping phenomenon can be determined holographically by the near horizon dynamics o... | higher curvature corrections to pole-skipping |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.