2 papers
hep-ph2013
Semiclassical treatment of pair creation in de Sitter space
Sergey Guts
We study a massive scalar field theory in de Sitter space. Using worldline instanton approach, we calculate probability of pair production in weak-field limit. In addition to expon…
hep-ph2011
Photon-photon interaction and Schwinger process
K. Bulycheva, S. Guts
We consider the tunneling processes induced by two-particle collisions. The result derived by the termal bath approach is reproduced by the classical configurations. The Coulomb an…