Spatial correlation of pairing modes in nuclei at finite temperature

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Physical Review (Section) C: Nuclear Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevC.40.1791· OSTI ID:5399142

Lotti, P; Cazzola, F ^[1]; Bortignon, P F ^[2]; Broglia, R A ^[3]; Vitturi, A ^[4]

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1. Dipartimento di Fisica, Universita di Padova, Padova (Italy) Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padova (Italy)
2. Istituto di Ingegneria Nucleare, Centro Studi Nucleari Enrico Fermi, Politecnico di Milano, Milano (Italy) Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro (Italy)
3. Dipartimento di Fisica, Universita di Milano, Milano (Italy) Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Milano (Italy) Niels Bohr Institute, Copenhagen (Denmark)
4. Dipartimento di Fisica, Universita di Trento, Povo, Trento (Italy) Istituto Nazionale de Fisica Nucleare, Sezione di Padova, Padova (Italy)

We study the effect of the temperature on the spatial correlations between two nucleons, induced by the pairing interaction. Both the Cooper pairs of superfluid nuclei as well as the low-lying pairing vibrations of the normal systems are strongly affected by temperatures of the order of the pairing gap, in keeping with the close origin existing between the two modes of excitation. Giant pairing vibrations, namely the zero sound of nuclei associated with the change of particle number in two, predicted to exist in both normal and superfluid systems, are not affected by temperature.

• OSTI ID: 5399142
• Journal Information: Physical Review (Section) C: Nuclear Physics; (USA), Journal Name: Physical Review (Section) C: Nuclear Physics; (USA) Vol. 40:4; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
COOPER PAIRS
CRANKING MODEL
HAMILTONIANS
INTERACTIONS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
NUCLEAR MODELS
NUCLEAR TEMPERATURE
NUCLEI
PAIRING INTERACTIONS
PROBABILITY
QUANTUM OPERATORS
RANDOM PHASE APPROXIMATION
SHELL MODELS
SUPERFLUID MODEL