7 papers · 1 filter
Quantum Lifts of Noninteger Power Law Field Theories
Jarah Evslin, Hengyuan Guo, Stefano Bolognesi
Field theories whose potentials have noninteger power laws have found many applications, but are often claimed to have no lift to quantum field theory except as effective model…
Oscillon Floquet Modes and the Operators that Excite Them
Bilguun Bayarsaikhan, Jarah Evslin, Sujoy Mahato
We present the scattering modes of the oscillon, to the first three orders in the Fodor expansion, in terms of elementary functions. In the case of relativistic modes, these result…
Krakow Lectures on Scalar Quantum Solitons
Jarah Evslin
We give a pedagogical introduction to Linearized Soliton Perturbation Theory (LSPT), a new and efficient tool for calculations involving quantum solitons. It is a Hamiltonian appro…
Linearized Q-Ball Perturbations
Jarah Evslin, Hui Liu, Tomasz Romańczukiewicz +3
Linearized deformations of the thick-walled (low-amplitude) (1+1)-dimensional Q-ball may be decomposed into relativistic modes, which are roughly plane waves, and also long-wavelen…
A Resonance in Elastic Kink-Meson Scattering
Bilguun Bayarsaikhan, Jarah Evslin
We analytically sum the leading bubble diagrams that contribute to the elastic scattering amplitude of a kink and a meson in the double-well model. We find a single peak, cor…
(De-)Exciting the Third Poschl-Teller Kink
Hengyuan Guo, Jarah Evslin, Stefano Bolognesi
There is a series of scalar models possessing reflectionless kinks whose linear perturbations are described by a Pöschl-Teller potential at integer level . The cases and $…
Quantum Oscillons are Long-Lived
Jarah Evslin, Katarzyna Slawińska, Tomasz Romańczukiewicz +1
As the longest lived transient, oscillons play a critical role in classical field theory simulations of many phenomena. However, beyond the classical approximation, it is well-know…