Article
Physics, Particles & Fields
Andreas Athenodorou, Michael Teper
Summary: The study calculates the low-lying glueball spectrum, string tensions, topology properties, and running coupling constants for SU(N) lattice gauge theories in 3 + 1 dimensions, extrapolating the results to the continuum limit and N = infinity. It shows that the lattice coupling strength is inversely proportional to 1/N for constant physics as N -> infinity. Additionally, the study provides analytic formulae for estimating string tensions at a given lattice coupling, based on fits to calculated values of a root sigma with the 3-loop beta-function.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yutaka Akagi, Yuki Amari, Sven Bjarke Gudnason, Muneto Nitta, Yakov Shnir
Summary: In a CP2 baby Skyrme model, fractional Skyrmions are studied using numerical methods. Stable, metastable, and unstable solutions resembling molecules are found, with discrete symmetries originating from congruencies of the fields in homogeneous coordinates on CP2.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Ryohei Kobayashi, Yasunori Lee, Ken Shiozaki, Yuya Tanizaki
Summary: In this study, the topological terms of (2+1)d sigma models and their consequences are examined, particularly focusing on the U(N)/U(1)(N) flag-manifold sigma model. It is found that certain Chern-Simons terms can convert skyrmions into fermions, challenging the initial expectation of the presence of a Hopf-like term.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Jeongwon Ho, Kyung Kiu Kim, Seoktae Koh, Hyun Seok Yang
Summary: It is shown that Yang-Mills instantons can trigger the expansion of the universe and the compactification of internal space. Generalizing the study, it is found that a homogeneous internal space is necessary for a homogeneous and isotropic universe. Moreover, bouncing solutions are possible for FLRW metrics with spatial curvature.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Yuki Fujimoto, Muneto Nitta
Summary: A novel confinement mechanism in two-flavor dense quark matter was discovered, classified into confined and deconfined phases. The criterion for confinement is the color neutrality of Aharonov-Bohm phases, while the deconfined phase consists of color non-singlet superfluid vortices.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
O-Kab Kwon, Chanju Kim, Yoonbai Kim
Summary: This paper studies supersymmetric inhomogeneous field theories in 1+1 dimensions with explicit coordinate dependence. Despite the breaking of translation symmetry, some supersymmetries can still be preserved. The simplest inhomogeneous theories with one real scalar field, possessing unbroken supersymmetry, are considered. The energy is bounded from below by the topological charge, which is not necessarily nonnegative definite. The bound is saturated when the first-order Bogomolny equation is satisfied. Non-constant static supersymmetric solutions, although lacking translation invariance, generally involve a zero mode. Two inhomogeneous theories obtained by deforming supersymmetric sine-Gordon theory and phi(6) theory are investigated. The most general supersymmetric solutions and the BPS energy spectrum for arbitrary position-dependent deformations are explicitly constructed.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Jorge Dasilva Golan, Margarita Garcia Perez
Summary: In this study, we investigate new SU(N) self-dual instanton solutions on RxT(3) using numerical methods. These solutions have fractional topological charge Q=1/N and are obtained on a box with twisted boundary conditions. We find that the specific twist choice, following the Fibonacci sequence, avoids the breakdown of volume independence in the large N limit. These solutions are relevant in understanding the vacuum-to-vacuum tunneling events and the degeneracy lifting in gauge theory.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Horatiu Nastase, Jacob Sonnenschein
Summary: In this note, soliton, breather, and shockwave solutions in certain two-dimensional field theories are studied. These include Heisenberg's model originally suggested to describe high energy nucleon scattering and TT deformations of canonical scalar field theories with a potential. Explicit soliton solutions with sine-Gordon and Higgs-type potentials are found, and it is proven that TT deformation does not correct the mass of the soliton. The form of breather solutions is conjectured, and shockwave solutions that generalize Heisenberg's Lagrangian are shown for certain TT deformed actions.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Qi-Xin Xie, Paul M. Saffin, Shuang-Yong Zhou
Summary: Research reveals the existence of charge swapping Q-balls (CSQs) in scalar theories accommodating spherically symmetric Q-balls, which undergo 4 distinct stages with different lifetimes. Utilizing numerical simulations with efficient absorbing boundary conditions, the lifetimes of CSQs for different parameters can be plotted, showcasing the attractor behavior and other properties of CSQs.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Barak Gabai, Xi Yin
Summary: In this paper, we provide a simplified derivation of the exact quantization condition (EQC) for the quantum periods of the one-dimensional Schrodinger problem with a polynomial potential, using Wronskian relations. We also extend the EQC to potentials with a regular singularity, which describe spherically symmetric quantum mechanical systems in a specific angular momentum sector. Our study reveals that the thermodynamic Bethe ansatz (TBA) equations governing the quantum periods undergo nontrivial monodromies during the analytical continuation of the angular momentum between integer values in the complex plane. The TBA equations and EQC are numerically validated using Hamiltonian truncation and are employed to explore the analytic continuation of the spectrum on the complex angular momentum plane in several examples.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Applied
Mariya A. Lizunova, Jasper Kager, Stan de Lange, Jasper van Wezel
Summary: The phi(4)-theory serves as a low-energy effective description in physics, describing stable, particle-like excitations known as topological defects or kinks. When interacting with various types of realistic impurity models, these realistic impurities behave qualitatively similarly to idealized delta function impurities, but show significant quantitative differences in localized impurity modes and collision dynamics. A particular regime of kink-impurity interactions is identified, where kinks lose all kinetic energy upon colliding with an impurity.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Physics, Particles & Fields
John Stout
Summary: This paper investigates the properties of the periodic potential in axionic theory and the behavior of the theory when the instanton expansion of the potential is lost. Using the Yang-Lee theory of phase transitions, the paper argues that the theory breaks down in the classic sense and states become light. However, there can still be large regions where the effective description remains valid. The paper also finds alternative expressions for the effective potential in terms of the properties of these light states, which are useful even when the instanton expansion breaks down.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Minoru Eto, Adam Peterson, Fidel I. Schaposnik Massolo, Gianni Tallarita
Summary: This study investigates the dynamics of global and local vortices with non-Abelian orientational moduli, focusing on head-on collisions and inter-vortex forces. The results show interesting dynamics of orientational moduli and a phase diagram separating Abelian and non-Abelian vortex types is constructed. Scattering with non-zero impact parameter and multi-vortex collisions are also explored.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yuan Zhong
Summary: We present a two-dimensional gravitating kink model that has exactly solvable background field equations and linear perturbation equations. The background solution describes a sine-Gordon kink that connects two asymptotic AdS(2) spaces, and can be interpreted as a thick brane world solution in two dimensions. The linear perturbation equation can be transformed into a Schrodinger-like equation with singular Poschl-Teller II potentials. The spectrum does not contain tachyonic states, indicating that the solution is stable against linear perturbations. Moreover, there can be a certain number of bounded vibrational modes around the kink, depending on the model parameters.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Yuan Zhong
Summary: This work revisits self-gravitating kink solutions in two-dimensional dilaton gravity, obtaining analytical solutions from a concise superpotential formalism. A general analysis on the linear stability of static solutions is conducted, resulting in a Schrodinger-like equation with factorizable Hamiltonian operator after gauge fixing to ensure stability.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)