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26 papers · 1 filter
An Example of Semiclassical Instanton-Like Scattering: (1+1) Dimensional Sigma Model
V. A. Rubakov, D. T. Son, P. G. Tinyakov
A solution to the classical field equations in the massless (1+1)-dimensional O(3) sigma model is found, which describes a multi-particle instanton-like transition at high energy.…
On the Production of Flux Vortices and Magnetic Monopoles in Phase Transitions
Serge Rudaz, Ajit M. Srivastava
We examine the basic assumptions underlying a scenario due to Kibble that is widely used to estimate the production of topological defects. We argue that one of the crucial assumpt…
Hydrodynamic Stability Analysis of Burning Bubbles in Electroweak Theory and in QCD
P. Huet, K. Kajantie, R. G. Leigh +2
Assuming that the electroweak and QCD phase transitions are first order, upon supercooling, bubbles of the new phase appear. These bubbles grow to macroscopic sizes compared to the…
Flipped Heavy Neutrinos from the Solar Neutrino Problem to Baryogenesis
J. Ellis, D. V. Nanopoulos, K. Olive
We discuss baryogenesis using the flipped model for lepton mass matrices. We show that the generalized see-saw mechanism in this model can not only provide MSW neutrino mix…
Remarks on the Heavy-Quark Symmetry in the Complex Plane
P. Ball, H. G. Dosch, M. A. Shifman
Hadronic systems built from a heavy quark and a cloud of light quarks and massless gluons posess the Isgur-Wise symmetry resulting in certain relations between various form factors…
The fermion sign problem: A new decoupling transformation, and a new simulation algorithm
Ghassan George Batrouni, Philippe de Forcrand
We discuss the Fermion sign problem and, by examining a very general Hubbard-Stratonovich (HS) transformation, argue that the sign problem cannot be solved with such methods. We pr…