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pro vyhledávání: '"Guo, Hengyuan"'
We have recently claimed that the domain wall in the 3+1 dimensional $\phi^4$ double-well model can be constructed as a squeezed, coherent state and that at one loop it has a finite tension given general, but unspecified, renormalization conditions.
Externí odkaz:
http://arxiv.org/abs/2411.10099
In 1+1 dimensions, it is well known that the quantum states corresponding to solitons are well described by coherent states. In his 1975 Erice lectures, Coleman observed that this construction does not extend to higher dimensions, as the coherent sta
Externí odkaz:
http://arxiv.org/abs/2411.05406
We consider the domain wall in the (2+1)-dimensional $\phi^4$ double well model, created by extending the $\phi^4$ kink in an additional infinite direction. Classically, the tension is $m^3/3\lambda$ where $\lambda$ is the coupling and $m$ is the mes
Externí odkaz:
http://arxiv.org/abs/2403.14062
Autor:
Guo, Hengyuan
Recently, Jarah has constructed the kink form factor relevant to the scattering of an ultrarelativistic meson with an arbitrary nonrelativistic scalar kink. However the formula was only applied to the Sine-Gordon model, where the form factor was long
Externí odkaz:
http://arxiv.org/abs/2209.03650
Autor:
Evslin, Jarah, Guo, Hengyuan
It has long been known that perturbative calculations can be performed in a soliton sector of a quantum field theory by using a soliton Hamiltonian, which is constructed from the defining Hamiltonian by shifting the field by the classical soliton sol
Externí odkaz:
http://arxiv.org/abs/2110.00234
Autor:
Evslin, Jarah, Guo, Hengyuan
At one loop, quantum kinks are described by a sum of quantum harmonic oscillator Hamiltonians, and so their spectra are known exactly. We find the first correction beyond one loop to the quantum states corresponding to kinks with an excited bound or
Externí odkaz:
http://arxiv.org/abs/2104.03612
Autor:
Evslin, Jarah, Guo, Hengyuan
Publikováno v:
Phys. Rev. D 103, 041701 (2021)
Collective coordinates provide a powerful tool for separating collective and elementary excitations, allowing both to be treated in the full quantum theory. The price is a canonical transformation which leads to a complicated starting point for subse
Externí odkaz:
http://arxiv.org/abs/2101.08028
Autor:
Evslin, Jarah, Guo, Hengyuan
Publikováno v:
Phys. Rev. D 103, 125011 (2021)
At one loop, quantum kinks are described by a sum of quantum harmonic oscillator Hamiltonians, and the ground state is just the product of the oscillator ground states. Two-loop kink masses are only known in integrable and supersymmetric cases and tw
Externí odkaz:
http://arxiv.org/abs/2012.04912
Autor:
Evslin, Jarah, Guo, Hengyuan
Calculations of quantum corrections to soliton masses generally require both the vacuum sector and the soliton sector to be regularized. The finite part of the quantum correction depends on the assumed relation between these regulators when both are
Externí odkaz:
http://arxiv.org/abs/1912.08507
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