About: DOUBLE FERMI MATRIX ELEMENT WITHIN PERTURBATION THEORY

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About: DOUBLE FERMI MATRIX ELEMENT WITHIN PERTURBATION THEORY Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The amplitude for double-beta decay with two-neutrino emission is related to beta(-) and beta(+) transitions of Fermi and Gamow-Teller type connecting ground state of initial and final nuclei with virtual intermediate nuclear states. The suppression of double Fermi and Gamow-Teller matrix elements has origin in violation of the isospin SU(2) and spin-isospin SU(4) symmetries, respectively. We study double Fermi matrix elements within an exactly solvable model. By using perturbation theory up to the first order a dependence of the two-neutrino double beta decay matrix element on the like-nucleon pairing, particle-particle and particle-hole proton-neutron interactions by assuming a weak violation of isospin symmetry of Hamiltonian expressed with generators of the SO(5) group. It is found that there is a dominance of transition through a single state of the intermediate nucleus. The amplitude for double-beta decay with two-neutrino emission is related to beta(-) and beta(+) transitions of Fermi and Gamow-Teller type connecting ground state of initial and final nuclei with virtual intermediate nuclear states. The suppression of double Fermi and Gamow-Teller matrix elements has origin in violation of the isospin SU(2) and spin-isospin SU(4) symmetries, respectively. We study double Fermi matrix elements within an exactly solvable model. By using perturbation theory up to the first order a dependence of the two-neutrino double beta decay matrix element on the like-nucleon pairing, particle-particle and particle-hole proton-neutron interactions by assuming a weak violation of isospin symmetry of Hamiltonian expressed with generators of the SO(5) group. It is found that there is a dominance of transition through a single state of the intermediate nucleus. (en)
Title	DOUBLE FERMI MATRIX ELEMENT WITHIN PERTURBATION THEORY DOUBLE FERMI MATRIX ELEMENT WITHIN PERTURBATION THEORY (en)
skos:prefLabel	DOUBLE FERMI MATRIX ELEMENT WITHIN PERTURBATION THEORY DOUBLE FERMI MATRIX ELEMENT WITHIN PERTURBATION THEORY (en)
skos:notation	RIV/68407700:21670/13:00214727!RIV14-MSM-21670___
http://linked.open...avai/predkladatel	Ústav technické a experimentální fyziky ČVUT
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(LM2011027)
http://linked.open...iv/cisloPeriodika	9-10
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Šimkovic, Fedor
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Ústav technické a experimentální fyziky ČVUT
http://linked.open...dnocenehoVysledku	70504
http://linked.open...ai/riv/idVysledku	RIV/68407700:21670/13:00214727
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	two-neutrino double-beta decay; nuclear matrix element; SO(5) model (en)
http://linked.open.../riv/klicoveSlovo	SO(5) model nuclear matrix element two-neutrino double-beta decay
http://linked.open...odStatuVydavatele	RO - Rumunsko
http://linked.open...ontrolniKodProRIV	[0B8E7546465A]
http://linked.open...i/riv/nazevZdroje	ROMANIAN JOURNAL OF PHYSICS
http://linked.open...in/vavai/riv/obor	BG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Project LSM/ULISSE – contribution of the Czech Republic to the extension of the large research infrastructure of European importance (underground laboratory and construction of SuperNEMO experiment, continuation of the Czech participation)
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	58
http://linked.open...iv/tvurceVysledku	Stefanik, D. Šimkovic, Fedor
http://linked.open...ain/vavai/riv/wos	000326846400025
issn	1221-146X
number of pages	7 (xsd:int)
http://localhost/t...ganizacniJednotka	21670

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