Article
Physics, Particles & Fields
Ibrahima Bah, Federico Bonetti, Ruben Minasian
Summary: The study analyzes the topological mass terms of BF type in supersymmetric M-theory compactifications to AdS(5) and discusses the dual field theories with distinct global discrete symmetries resulting from different choices of boundary conditions for the BF terms. It provides a detailed discussion on the 't Hooft anomalies for 4d N = 1 SCFTs arising from M5-branes wrapped on a Riemann surface without punctures, including theories from M5-branes at a DOUBLE-STRUCK CAPITAL Z(2) orbifold singularity. The anomaly polynomial computation through inflow reveals background fields for discrete global 0-, 1-, and 2-form symmetries, continuous 0-form symmetries, and axionic background fields properly interpreted in the context of anomalies in the space of coupling constants.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Shovon Biswas, Gordon W. Semenoff
Summary: This article discusses in detail the boundary conditions for a massless Dirac fermion in 2+1 dimensions where the space is a half-plane. It is argued that linear boundary conditions generically break C P, T, Lorentz, and conformal symmetries. However, there are special cases where these symmetries can be maintained. The article also explores the exotic representations and edge ferromagnetism that arise from the edge states.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Joan Elias Miro, James Ingoldby
Summary: Hamiltonian Truncation is a numerical approach for calculating observables non-perturbatively in Quantum Field Theory. While it can regulate UV divergences, using HT instead of a local regulator for certain Delta values may lead to additional UV divergences, indicating a breakdown of locality. This conclusion is based on the analysis of conformal perturbation theory up to fourth order.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Luca Capizzi, Cecilia De Fazio, Michele Mazzoni, Lucia Santamaria-Sanz, Olalla A. Castro-Alvaredo
Summary: In this paper, we studied the entanglement content of zero-density excited states in complex free quantum field theories, focusing on the symmetry resolved entanglement entropy. We showed that the ratio of Fourier-transforms of the symmetry resolved entanglement entropies takes a simple and universal form for these states. We also extended our results to excited states of interacting theories and developed a higher dimensional generalisation of the branch point twist field picture.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Sachin Jain, Renjan Rajan John
Summary: This paper investigates the relation between the parity-odd and parity-even parts of correlation functions in theories with conserved or weakly broken higher spin symmetries, as well as their connection to the parity-even part computed from free theories. The well-known link between CFT correlation functions and de-Sitter amplitudes in one higher dimension implies a connection between parity-even and parity-odd amplitudes calculated using non-minimal interactions.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Conghuan Luo, Yifan Wang
Summary: An important problem in Quantum Field Theory is to understand the structures of observables on nontrivial topology spacetime manifolds. This problem arises when studying physical systems at finite temperature and/or finite volume, and encodes properties of the underlying microscopic theory that are often obscured on flat spacetime. In Conformal Field Theory, a non-perturbative understanding of the Hilbert space on a spherical topology is achieved, but it remains challenging to consider more general spatial manifolds.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Abhijit Gadde, Trakshu Sharma
Summary: In this paper, constraints imposed by unitarity and crossing symmetry on conformal theories in large dimensions are analyzed. The results show that under certain conditions, the four-point function of identical scalar operators in a unitary conformal theory resembles that of the generalized free field theory. Additional assumptions about the spectrum of light operators can further extend the applicability of these results.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Yu Nakayama, Ken Kikuchi
Summary: In this study, the fate of the non-supersymmetric Gross-Neveu-Yukawa fixed point in 4 - epsilon dimensions with a two-component Majorana fermion continued to two dimensions is investigated. Assuming it is a fermionic minimal model with a chiral DOUBLE-STRUCK CAPITAL Z(2) symmetry and two relevant singlet operators, four candidates are narrowed down. By matching the spin contents of the preserved topological defect lines and using a constraint from the double braiding relation, the preferred scenario is determined to be either the fermionic (11, 4) minimal model if it is non-unitary, or the fermionic (E-6, A(10)) minimal model if it is unitary.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Antonio Antunes, Miguel S. Costa, Vasco Goncalves, Joao Vilas Boas
Summary: This study focuses on higher-point functions of scalar operators in CFTs, exploring OPE data involving multiple spinning operators. The lightcone blocks for five- and six-point functions in the snowflake channel are derived and used to analyze these correlators in the lightcone limit. The large spin expansion of OPE coefficients involving two or three spinning operators is determined. Results are verified by comparing with the block decomposition of higher-point functions in generalized free theory and in theories with a cubic coupling.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
L. V. Bork, R. M. Iakhibbaev, N. B. Muzhichkov, E. S. Sozinov
Summary: In this study, properties of four-point colour ordered scattering amplitudes in D = 6 fishnet CFT were investigated, revealing a simple relation to their D = 4 counterparts previously studied in literature. This relation allowed for a closed expression of the amplitudes to be obtained and their behavior at weak and strong coupling to be explored. Additionally, a generating function for on-shell D = 6 Box ladder diagrams with l rungs was derived as a byproduct of this investigation.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Lakshya Bhardwaj
Summary: A class of 5d superconformal field theories can be constructed by integrating out BPS particles from 6d SCFTs compactified on a circle. The flavor symmetry of these 5d SCFTs can be extracted using geometric engineering in M-theory.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Sachin Jain, Renjan Rajan John, Vinay Malvimat
Summary: This work presents momentum space Ward identities related to broken higher spin symmetry as an alternate approach to compute correlators of spinning operators in interacting theories. The authors use higher spin equations to obtain parity even and parity odd contributions to correlators involving spinning and scalar operators in a general kinematic regime, and match their results with existing literature when available. The interesting fact that higher spin equations can be used away from the conformal fixed point is illustrated by considering mass deformed free boson theory and solving for two-point functions of spinning operators using higher spin equations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Simeon Hellerman, Nozomu Kobayashi, Shunsuke Maeda, Masataka Watanabe
Summary: In this study, we extend previous work on the ground state configuration of the D = 3, Wilson-Fisher conformal O(4) model, showing that for generic ratios of charge densities, the ground-state configuration is inhomogeneous. The ground state energy scales with (rho(1) + rho(2))(3/2) and violates cluster decomposition in the large-volume, fixed-density limit, with a negative definite two-point function at antipodal points of the torus at large charge.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Pasquale Calabrese, Jerome Dubail, Sara Murciano
Summary: Through a thorough analysis of Wess-Zumino-Witten models, we find that in theories with a non-abelian symmetry, the Renyi entanglement entropy is equally distributed among different sectors at leading order, with a leading term breaking this equipartition depending only on the dimension of the representation. Additionally, a log log L contribution exhibits a universal prefactor equal to half the dimension of the Lie group.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Leandro Lanosa, Mauricio Leston, Mario Passaglia
Summary: This paper discusses the importance of crossing symmetry and reflection positivity as tools in the bootstrap program applied to CFT. It shows that reflection positivity can provide additional information and explains how it captures a significant part of the restrictions imposed by the full crossing symmetry equality. The paper also demonstrates the practical value of this approach through examples of general CFT models in d-dimensions.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Oren Bergman, Marco Fazzi, Diego Rodriguez-Gomez, Alessandro Tomasiello
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Jorge G. Russo, Miguel Tierz
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Oren Bergman, Diego Rodriguez-Gomez
Summary: By utilizing 5-brane webs, we examined the two-dimensional space of supersymmetric mass deformations of higher rank generalizations of the 5d E-1 and E-1 theories. The analysis suggests that the number of different phases increases with the rank, and the space of deformations varies qualitatively for even and odd rank cases.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
D. Rodriguez-Gomez, J. G. Russo
Summary: The thermal 2-point correlation functions in the black brane AdS(5) background dual to 4d CFT's at finite temperature for operators of large scaling dimension were computed. A formula matching the expected structure of the OPE was found, showing an exponentiation property whose origin was explained. Additionally, the first correction to the two-point function due to graviton emission, encoding the proper time from the event horizon to the black hole singularity, was computed.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Guillermo Arias Tamargo, Antoine Bourget, Alessandro Pini
Summary: The study analyses the Higgs branch of 4d N = 2 SQCD gauge theories with non-connected gauge groups. Hasse diagrams are derived corresponding to the Higgs mechanism using adapted characters for representations of non-connected groups. 3d N = 4 magnetic quivers for the Higgs branches in the type I discrete gauging case are proposed, and extensive checks are provided by means of Coulomb branch Hilbert series computations.
Article
Physics, Particles & Fields
D. Rodriguez-Gomez, J. G. Russo
Summary: Studying 2-point and 3-point functions in CFT at finite temperature for large dimension operators using holography provides insights into universal formulas for holographic free energy. By including alpha ' corrections, leading corrections at strong coupling can be reproduced. 3-point functions exhibit intricate structures and interesting properties, including a factorization property when dimensions satisfy specific conditions, suggesting that factorization in d > 2 is a reflection of the semiclassical regime.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Hare Krishna, D. Rodriguez-Gomez
Summary: In this study, 2-point correlation functions for scalar operators in position space are examined using holography, with a focus on operators with large conformal dimensions. The geodesic approximation is utilized for propagators. In addition to the main contribution, a correction involving bulk cubic couplings and higher curvature couplings is identified, which provides insight into the interior of a black hole.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
J. G. Russo, P. K. Townsend
Summary: This study generalizes the scale-invariant theory of an axion and a dilaton coupled to gravity to a 'universal' one-axion model with two dilatons that reproduces itself under consistent dimensional-reduction/truncation. It shows that flat FLRW cosmologies correspond to trajectories of a three-dimensional autonomous dynamical system and analyzes them with a focus on accelerated cosmic expansion, deriving precise swampland bounds that exclude eternal acceleration.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Jorge G. Russo
Summary: This article presents a cosmological model that incorporates gravity coupled with three interacting scalar fields. The dynamical system of these scalar fields exhibits strange attractors similar to the classic Lorenz attractor, leading to chaotic behavior in cosmology.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Physics, Particles & Fields
D. Rodriguez-Gomez, J. G. Russo
Summary: Exact formulas for circular Wilson loops in the N=4 and N=2* theories with gauge groups U(N) and SU(N) are derived, applicable in the limit of large k, small Yang-Mills coupling g, and any finite N. Closed analytic formulas are obtained for SU(2) and U(2) cases, while 1/k series expansions are asymptotic. Simple formulas for correlation functions between the k-symmetric Wilson loops and chiral primary operators are also provided.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
D. Rodriguez-Gomez, J. G. Russo
Summary: We study defect operators in scalar field theories in dimensions d = 4 - epsilon and d = 6 - epsilon. In the double scaling limit, the quantum defect theory can be solved using perturbation theory and the defect beta functions are computed up to two loops. The defect fixed points can move and merge, exhibiting a remarkable factorization property.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Jorge G. Russo, Paul K. Townsend
Summary: All solutions to the no-birefringence conditions in nonlinear electrodynamics have been discovered. Along with the known Born-Infeld and Plebanski cases, a reverse Born-Infeld case and an extreme-Born-Infeld case have been found. Only Born-Infeld has a weak-field limit, and only Born-Infeld and extreme-Born-Infeld prevent superluminal propagation in constant electromagnetic backgrounds. However, all cases have a conformal strong-field limit that coincides with the strong-field limit of Born-Infeld as found by Bialynicki-Birula.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)