415 citations · 2.6k across the 142 of their papers we have counts for
7 papers · 1 filter
Removing Tadpoles in a Soliton Sector
Jarah Evslin, Hengyuan Guo
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 d…
The Two-Loop Kink Mass
Jarah Evslin
At one loop, quantum kinks are described by a free theory. The nonlinearity and so the interesting phenomenology arrives at two loops, where, for example, internal excitations coup…
Proton and deuteron mass radii from near-threshold -meson photoproduction
Rong Wang, Wei Kou, Chengdong Han +2
We analyze the exclusive -meson photoproduction on both hydrogen and deuterium targets based on the published data of CLAS, SAPHIR and LEPS collaborations. A dipole-form scalar…
Evidence for the Unbinding of the Kink's Shape Mode
Jarah Evslin
The double-well theory admits a kink solution, whose rich phenomenology is strongly affected by the existence of a single bound excitation called the shape mode. We find that…
The Kink Mass at Two Loops
Jarah Evslin
The two-loop correction to the mass of the kink is in terms of the coupling and the meson mass evaluated at the minimum of the potential. This is calculat…
Excited Kinks as Quantum States
Jarah Evslin, Hengyuan Guo
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…