FieldsTheoretical Particle Physics

PICKUPUnderstanding NonInvertible Symmetries in Higher Dimensions Using Topological Defects
2024927
By constructing KramersWannierWegner duality and Z_{2} duality defects and deriving their crossing relations, this study presents the first examples of codimension one noninvertible symmetries in fourdimensional quantum field theories.Theoretical Particle Physics

PICKUPQuantum Mechanics of OneDimensional ThreeBody Contact Interactions
2024213
The quantum mechanical description of topologically nontrivial threebody contact interactions in one dimension is not well understood. This study explores the Hamiltonian description of these interactions using the pathintegral formalism.
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
Theoretical Particle Physics

Investigating Unitarity Violation of Lee–Wick’s Complex Ghost with Quantum Field Theory
2024119
Theories with fourthorder derivatives like Lee–Wick’s quantum electrodynamics model or quadratic gravity result in complex ghosts above a definite energy threshold that violate unitarity.Theoretical Particle Physics

Investigating Δ and Ω Baryons as Meson–Baryon Bound States in Lattice Quantum Chromodynamics
2023713
We investigate Δ and Ω baryons as meson–baryon bound states in lattice quantum chromodynamics and show that their difference results from the kinematic structure of the two meson–baryon systems, and not their interaction.
Theoretical Particle Physics

Novel Insights Into Bulk Reconstruction in the Antide Sitter/Conformal Field Theory Correspondence
202361
Bulk reconstruction in antide Sitter/conformal field theory is fundamental to our understanding of quantum gravity. We show that contrary to popular belief, bulk reconstruction is rather simple and intuitive.Theoretical Particle Physics

The Stolz–Teichner Conjecture and Supermoonshine
2023425
We check the validity of the "divisibility property," predicted by the Stolz–Teichner conjecture, for several infinite families of theories built from Duncan’s Supermoonshine module. Along the way, we develop the tools necessary to construct the socalled "periodicity class."Theoretical Particle Physics

A Closed Bosonic String Field Theory Based on the Fokker–Planck Formalism
2023411
A string field theory for closed bosonic strings is formulated using pants decomposition and the Fokker–Planck formalism.Theoretical Particle Physics

Fractional Topological Charge Construction in a U(1) Lattice Gauge Theory Framework
2023327
We have constructed a fractional topological charge in the lattice Abelian gauge theory formalism, which avoids the issue of infinite degrees of freedom in continuum spacetime quantum field theory.
Theoretical Particle Physics

Theoretical Assessment of Fwave Bottom Mesons and Their Properties
20221124
We use heavy quark effective theory to study Fwave bottom mesons. Using theory and experimental data, we calculate their masses and analyze their decay widths to estimate the upper bound to the associated couplings.Theoretical Particle Physics

Representations of KBc Algebra for Generating String Field Theory Solutions
20221031
We propose a general method for generating solutions in string field theory from a solution constructed using KBc algebra, and reproduce known solutions constructed earlier using different methods.Theoretical Particle Physics

PICKUPOpen String Field Theory Beyond Feynman Diagrams
202289
Theoretical physicists propose an alternative way of performing perturbative calculations in an open string field theory that has no analogy in the standard quantum field theory formalism.
Elementary particles, fields, and strings
Theoretical Particle Physics

PTEP SPECIAL SECTION
New Phases of Matter: Topological Physics in the 21^{st} Century
2022719
Researchers from Japan highlight in an editorial our current understanding of topological phases of matter, focusing on the classification of the newly discovered symmetry protected topological phases.Fundamental Theory of Condensed Matter Physics, Statistical Mechanics, Fluid Dynamics,
Superconductivity
Theoretical Particle Physics

Simulating Strongly Coupled Quantum Field Theory with Quantum Algorithms
2022527
Nonperturbative quantum field theory problems can often be difficult to solve with classical algorithms. Researchers now develop quantum computing algorithms to understand such problems in the Hamiltonian formalism.
Theoretical Particle Physics

Getting Around the Sign Problem to Solve an Open Quantum System
2022518
Researchers from Japan have found a novel nonequilibrium quantum system that doesn’t have the sign problem. The transport properties of the system are simulated with a Monte Carlo approach.Elementary particles, fields, and strings
Theoretical Particle Physics

PICKUPQuantum Anomaly in a Dirac Fermion System with Spacetime Dependent Mass
2022427
Scientists investigate quantum anomalies in a system of Dirac fermions with spacetime dependent mass and show that the anomaly formulas can be expressed in terms of superconnections.
Elementary particles, fields, and strings
Theoretical Particle Physics

Calculating Superconformal Index of 𝓝 = 4 SuperYangMills Theory for Finite N
2022222
The examination of AdS/CFT correspondence for finite N, where quantum gravitational effects become important, reveals that finite N corrections for the superconformal index can be reproduced as D3 brane contributions.Theoretical Particle Physics

PICKUPUnderstanding Phase Transitions in Supersymmetric Quantum Electrodynamics With Resurgence Theory
20211125
Using resurgence theory to describe phase transitions in quantum field theory shows that information on nonperturbative effects like phase transitions can be obtained from a perturbative series expansion.
Theoretical Particle Physics