On the dynamics of non-relativistic flavor-mixed particles / Medvedev Mikhail V. // JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. - 2014. - V. , l. 6.

ISSN/EISSN:

1475-7516 / нет данных

Type:

Article

Abstract:

Evolution of a system of interacting non-relativistic quantum flavor-mixed particles is considered both theoretically and numerically. It was shown that collisions of mixed particles not only scatter them elastically, but can also change their mass eigenstates thus affecting particles' flavor composition and kinetic energy. The mass eigenstate conversions and elastic scattering are related but different processes, hence the conversion S-matrix elements can be arbitrarily large even when the elastic scattering S-matrix elements vanish. The conversions are efficient when the mass eigenstates are well-separated in space but suppressed if their wave-packets overlap; the suppression is most severe for mass-degenerate eigenstates in flat space-time. The mass eigenstate conversions can lead to an interesting process, called ``quantum evaporation{''

Author keywords:

particle physics - cosmology connection; dark matter theory; cosmological neutrinos DARK-MATTER; CONSTRAINTS; NEUTRINOS

DOI:

10.1088/1475-7516/2014/06/063

Web of Science ID:

ISI:000339801900018

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUN
Publisher	IOP PUBLISHING LTD
Address	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Language	English
Article-Number	063
Keywords-Plus	DARK-MATTER; CONSTRAINTS; NEUTRINOS
Research-Areas	Astronomy \& Astrophysics; Physics
Web-of-Science-Categories	Astronomy \& Astrophysics; Physics, Particles \& Fields
Author-Email	mmedvedev@cfa.harvard.edu
Funding-Acknowledgement	ITC; DOE {[}DE-FG02-07ER54940]; NSF {[}AST-1209665]
Funding-Text	The authors is grateful to the Institute for Theory and Computation at Harvard University, where this works has been performed, for hospitality and the ITC colleagues for useful discussions. This work was supported in part by the ITC and by DOE grant DE-FG02-07ER54940 and NSF grant AST-1209665.
Number-of-Cited-References	15
Usage-Count-Since-2013	1
Journal-ISO	J. Cosmol. Astropart. Phys.
Doc-Delivery-Number	AM4DE