Results 41 to 50 of about 626 (115)

On monopoles in low energy string theory and non-abelian particle trajectories [PDF]

open access: yes, 1997
This thesis is mainly concerned with monopoles. First, the existence of monopoles and their behaviour in the Yang-Mills-Higgs theories, and in parallel, the instanton solutions of the Yang-Mills fields are explained.
Azizi, Azizollah
core  

Skyrmions in models with pions and rho mesons

open access: yesJournal of High Energy Physics, 2018
A problem with the standard Skyrme model is that Skyrmion binding energies are around 15%, being much larger than the order 1% binding energies of the nuclei that they aim to describe.
Carlos Naya, Paul Sutcliffe
doaj   +1 more source

Instanton expansions and phase transitions

open access: yesJournal of High Energy Physics, 2022
A central object in any axionic theory is its periodic potential, which is typically generated by instantons. The goal of this paper is to understand what physically happens to the theory when we lose control of the potential’s instanton expansion.
John Stout
doaj   +1 more source

M2-branes and instantons [PDF]

open access: yes, 2013
In the first part of this thesis we discuss some of the issues arising in extending the ABJM action of multiple M2-branes to include couplings to the background 3-form field.
ALLEN, JAMES,PATRICK
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Classical solutions in quantum field theory: solitons and instantons in high energy physics

open access: yes, 2012
Classical solutions play an important role in quantum field theory, high energy physics and cosmology. Real-time soliton solutions give rise to particles, such as magnetic monopoles, and extended structures, such as domain walls and cosmic strings, that ...
Weinberg, Erick J, J. Weinberg, Erick
core   +1 more source

False vacuum decay of excited states in finite-time instanton calculus

open access: yesJournal of High Energy Physics
Extracting information about a system’s metastable ground state energy employing functional methods usually hinges on utilizing the late-time behavior of the Euclidean propagator, practically impeding the possibility of determining decay widths of ...
B. Garbrecht, N. Wagner
doaj   +1 more source

Kink dynamics in a parametric ϕ 6 system: a model with controllably many internal modes

open access: yesJournal of High Energy Physics, 2017
We explore a variant of the ϕ 6 model originally proposed in Phys. Rev. D 12 (1975) 1606 as a prototypical, so-called, “bag” model in which domain walls play the role of quarks within hadrons.
A. Demirkaya   +4 more
doaj   +1 more source

Semiclassical monopole calculations in supersymmetric gauge theories [PDF]

open access: yes, 2000
We investigate semiclassical contributions to correlation functions in N = 1 supersymmetric gauge theories. Our principal example is the gluino condensate, which signals the breaking of chiral symmetry, and should be exactly calculable, according to a ...
Davies, N.M., Davies, N Michael
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Soliton solutions of the fermion-Skyrmion system in (2+1) dimensions

open access: yesJournal of High Energy Physics, 2018
We study effects of backreaction of the fermionic modes localized by the baby Skyrmion in the (2+1)-dimensional Skyrme model. It is shown that there is a tower of fermionic modes of two different types, localized by the soliton, however there is only one
I. Perapechka   +2 more
doaj   +1 more source

Solitons on lattices and curved space-time [PDF]

open access: yes, 2001
This thesis is concerned with solitons (solutions of certain nonlinear partial differential equations) in certain cases when the underlying space is either a lattice or curved. Chapter 2 of the thesis is concerned with the outcome of collisions between a
Kotecha, Vinay, Kotecha, V.
core  

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