10 papers · 1 filter
An Extended Soliton's Zero Modes
Jarah Evslin, Hui Liu
Quantum field theory in the presence of localized solitons is more complicated than vacuum sector quantum field theory, largely as a result of the soliton's zero modes. In the pres…
The Domain Wall String's Anti-Stokes Scattering Cross Section
Hengyuan Guo, Jarah Evslin, Hui Liu
We consider anti-Stokes scattering, in which a perturbative meson scatters off of a domain wall string's shape mode excitation, de-exciting it. Previously the probability of this p…
Scheme Dependence of the One-Loop Domain Wall Tension
Jarah Evslin, Hui Liu
The one-loop tension of the domain wall in the 3+1 dimensional double-well model was derived long ago using dimensional regularization. The methods used can only be applied t…
The Domain Wall Soliton's Tension
Jarah Evslin, Hui Liu, Baiyang Zhang
We calculate the one-loop tension of the domain wall soliton in the double-well model. Our result agrees with previous results from Dashen, Hasslacher and Neveu (1974) in 1+1…
(Anti-)Stokes Scattering on the Domain Wall String
Hengyuan Guo, Hui Liu, Jarah Evslin
In a general (2+1)-dimensional scalar model, we consider the scattering of a single quantum of radiation off a domain wall string, which excites or de-excites the wall's internal s…
Constructing A Finite Tension Domain Wall in
Jarah Evslin, Hengyuan Guo, Hui Liu +1
We have recently claimed that the domain wall in the 3+1 dimensional double-well model can be constructed as a squeezed, coherent state and that at one loop it has a finite t…
A Finite Tension for the Domain Wall
Jarah Evslin, Hui Liu, Baiyang Zhang +1
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…
The Reflection Coefficient of a Reflectionless Kink
Jarah Evslin, Hui Liu
Classically, reflectionless kinks transmit all incident radiation. Recently, we have used an analyticity argument together with a solution of the Lippmann-Schwinger equation to wri…
Kink-Meson Inelastic Scattering
Hui Liu
In this thesis, we first review the linearized soliton perturbation theory developed in recent years, which is particularly simple in the one-kink sector. Using it, the amplitude a…
Elastic Kink-Meson Scattering
Jarah Evslin, Hui Liu
In classical field theory, radiation does not reflect off of reflectionless kinks. In quantum field theory, radiation quanta, called mesons, can be reflected. We provide a general…