Vacuum Polarization Energy of a Nonzero Radius Cosmic StringWe calculate the vacuum polarization energy (VPE) of a scalar field in the background of a nonsingular cosmic string in 2+1 spacetime dimensions. Our calculation expresses the VPE as a renormalized…Noah Graham, Herbert Weigel·Aug 4, 2026SaveLearn
The Hitchin and Sutcliffe metrics for hyperbolic 2-monopolesWe compare two currently known examples of hyperbolic SU(2) two-monopole metrics and their candidacy as models of hyperbolic monopole dynamics. The first is Sutcliffe's boundary metric and the…Thomas Galvin·Aug 4, 2026SaveLearn
Logarithmic Soft Photon Theorem and Waveform Tails in Higher DimensionsWe derive the leading logarithmic soft-photon theorem in d>4 spacetime dimensions and its classical radiative counterpart. A direct one-loop analysis in massive scalar quantum electrodynamics (QED)…Biswajit Sahoo·Aug 4, 2026SaveLearn
Cluster Algebras, Cube Roots, and Energy Correlators in N=4 SYMWe provide a cluster algebraic construction of the cube root symbol letters that appear at leading order in the near-collinear expansion of the four-point energy correlator in N=4 SYM…Dani Kaufman, Marcus Spradlin, Anastasia Volovich et al.·Aug 4, 2026SaveLearn
Impurities Near the Light ConeThe lightlike Wilson line cusp underlies the Sudakov double logarithm and is a central ingredient in gauge-theory factorization. We ask what replaces this behavior for general conformal line defects…Gabriel Cuomo, Simone Giombi, Luigi Tizzano·Aug 4, 2026SaveLearn
Intersection matrices associated to geometric-ordered bases of Feynman integralsIn integration-by-parts reduction of Feynman integrals, the order relation in the Laporta algorithm determines a set of master integrals. In this paper we investigate the intersection matrices of the…Iris Bree, Federico Gasparotto, Sebastian Pögel et al.·Aug 4, 2026SaveLearn
Genus-One Rigidity of Bounded Virasoro Pairings for 3D GravityMotivated by the proposed relation between 3D gravity and the doubled Virasoro TQFT, and by the associated program of ensemble holography, we ask whether ensemble holography in AdS3/CFT2 can be…Xingyang Yu·Aug 4, 2026SaveLearn
Moduli Spaces of Connections and B-fields from T-duality with H-fluxWe study the geometry of mixed fields, consisting of a connection and a B-field on a principal circle bundle over a Riemann surface, from the perspective of gauge theory and T-duality. Motivated by…Fei Han, Pedram Hekmati, Tsuyoshi Kato et al.·Aug 4, 2026SaveLearn
Notes on phase structure and non-vanishing β functions of one-unitary matrix modelUnitary matrix models, among other things, play an important role in representing the irregular conformal block and hence LEEA of some asymptotically free susy gauge theories. Here, we develop a…Hiroshi Itoyama, Reiji Yoshioka·Aug 4, 2026SaveLearn
Quantum Anomalies of Tensionless Bosonic StringsWe systematically investigate and compare the worldsheet actions, BRST structures and the quantum anomalies of four different formulations of tensionless (T = 0) bosonic string theory: the…Bin Chen, Zezhou Hu·Aug 4, 2026SaveLearn
Coarse-Graining and Long-Range Response in Generated SystemsCoarse-graining should retain the response to the perturbations and observations of interest. We study this requirement for systems defined by generating operations and observation maps. Equality of…Jinku Guo·Aug 4, 2026SaveLearn
A Spectral Criterion for Emergent GravityWe study long-range tensor response and its coupling to matter through sourced spectral equations on fixed spacetime. For a response with a positive spectral representation, the weight at zero is…Jinku Guo·Aug 4, 2026SaveLearn
A unified expansion of Einstein's gravityNon-Lorentzian theories of gravity, most common of which are Galilean and Carrollian gravity, arise from General relativity under suitable scalings. General relativity can be obtained by gauging the…Arkachur Bhattacharya, Pushkar Soni·Aug 4, 2026SaveLearn
Casimir effect in Plebański nonlinear electrodynamics with spontaneously Lorentz-breaking magnetic vacuaWe study the Casimir effect in a class of gauge-invariant nonlinear electrodynamics models designed to admit spontaneously Lorentz-breaking magnetic vacua. The theory is formulated in the Plebański…C. A. Escobar, Román Linares, A. Martín-Ruiz·Aug 4, 2026SaveLearn
Worldsheet Duals to One-Matrix ModelsWe derive a concrete closed string dual to any interacting Hermitian one-matrix model, away from the double-scaling limit. Matrix and string correlators manifestly agree, to all orders in the genus…Alessandro Giacchetto, Rajesh Gopakumar, Edward A. Mazenc·Aug 4, 2026SaveLearn
Computational quantum field theory for fermion pair creation in 2-dimensional curved spacetimesSimilarly to the well-known phenomenon of particle / anti-particle pair production in strong electromagnetic fields (the Schwinger effect), the naïve matter field vacuum state can be excited by…Mohammed Alkhateeb, James P. Edwards, Yves Caudano·Aug 4, 2026SaveLearn
Extending Weinberg's EFT: effective scalar-tensor theories up to sixth orderWe present a systematic construction of the six-derivative effective scalar-tensor theories, extending the four-derivative framework previously developed by Steven Weinberg. The on-shell effective…Eugeny Babichev, Sukŗti Bansal, Maria Mylova et al.·Aug 4, 2026SaveLearn
Large deflection scattering, soft radiation and KMOC formalismKMOC (Kosower, Maybee, and O'Connell) formalism is an approach to analyze classical scattering in gauge theories and gravity using a class of ``inclusive'' observables which can be…Samim Akhtar, Alok Laddha, Arkajyoti Manna et al.·Aug 4, 2026SaveLearn
Celestial Mellin Amplitudes II: Spin-1 and Spin-2 Exchange, and BeyondWe further develop celestial Mellin amplitudes arXiv:2412.11992 to capture the exchange of particles with spin. For massless external scalar fields, we derive closed-form celestial Mellin amplitudes…Sébastien Malherbe, Paolo Pergola, Charlotte Sleight et al.·Aug 4, 2026SaveLearn
An algebra for covariant observers in de Sitter spaceIn d-dimensional de Sitter spacetime, consistency of perturbative expansion requires imposing all second-order gravitational constraints associated with the SO(1,d) isometry group, rather than…Bin Chen, Jie Xu·Aug 4, 2026SaveLearn
Exact solutions to complex Type IIB supergravity for complex superalgebra F(4) and its real formsWe construct the general local solutions to complexified Type IIB supergravity which are invariant under the complexified Lie superalgebra F(4). The geometry is a product of complexified maximally…Eric D'Hoker, Michael Gutperle, Christoph F. Uhlemann·Aug 4, 2026SaveLearn
Generalized unitary evolution for symplectic scalar fermionsThe theory of symplectic scalar fermion of LeClair and Neubert is studied. The theory evades the conventional spin-statistics theorem because its Hamiltonian is pseudo Hermitian. Here, we clarify the…Cheng-Yang Lee·Aug 4, 2026SaveLearn
Celestial Holography, A Hitchhiker's Guide to the Celestial SphereThis primer offers an first introduction to Celestial Holography, a rapidly evolving framework aiming to describe quantum gravity in asymptotically flat spacetimes. We start from the established…Faïçal Barzi·Aug 3, 2026SaveLearn
Supersymmetric Twisted Carroll TheoriesWe study the recently discussed 2+1-dimensional Hull-type twisted N=2 Carroll superalgebra. This structure admits both electric- and magnetic-type realizations at the level of the…Osman Ergeç·Aug 3, 2026SaveLearn
A field-inspired derivation of open string amplitudesWe propose a new method for computing N-point tree-level open string amplitudes, inspired by the field-theoretical perturbiner framework and bypassing world-sheet moduli integration. The…Humberto Gomez, Renann Lipinski Jusinskas, Sitender Pratap Kashyap·Aug 3, 2026SaveLearn