12,315,859 research outputs found
On unification of gravitation and electromagnetism in the framework of a general-relativistic approach
We consider the unification problem for the gravitational and electromagnetic
interactions and its possible solution on the basis of the existence of an
effective Riemannian space in nonlinear electrodynamicsComment: 3 pages, Talk given at the International Conference RUSGRAV-13, June
23-28, 2008, PFUR, Mosco
A local gauge invariant infrared regularization of the Yang-Mills theory
A local gauge invariant infrared regularization for the Yang-Mills theory is
constructed on the basis of a higher derivative formulation of the model.Comment: 7 page
Multiphonon anharmonic decay of a quantum mode
A nonperturbative theory of multiphonon anharmonic transitions between energy
levels of a local mode is presented. It is shown that the rate of transitions
rearranges near the critical level number : at smaller the process
slows down, while at larger it accelerates in time, causing a jump-like
loss of energy followed by the generation of phonon bursts. Depending on
parameters, phonons are emitted in pairs, triplets etc.Comment: submitted to Europhys.Let
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