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PAIR FLUCTUATIONS IN THE GROUND-STATE OF A 2-DIMENSIONAL ATTRACTIVE FERMI GAS

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UNSPECIFIED (1994) PAIR FLUCTUATIONS IN THE GROUND-STATE OF A 2-DIMENSIONAL ATTRACTIVE FERMI GAS. In: International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV (M2S-HTSC IV), GRENOBLE, FRANCE, JUL 05-09, 1994. Published in: PHYSICA C, 235 (Part 4). pp. 2353-2354. ISSN 0921-4534.

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Abstract

The excitation spectrum of pair fluctuations in the ground state of a dilute two-dimensional (2D) attractive Fermi-gas is studied for different coupling regimes. In the strong-coupling limit the spectrum has the Bogolubov form, but in the weak-coupling regime there are two types of the pair excitations (different from two-fermion scattering states): (i) long-wavelength collective mode with the cutoff at momentum q(c) similar to 1/xi(0), where xi(0) is the pair size, and (ii) pair excitations with q greater than or equal to root 8m mu.

Item Type: Conference Item (UNSPECIFIED)
Subjects: Q Science > QC Physics
Journal or Publication Title: PHYSICA C
Publisher: ELSEVIER SCIENCE BV
ISSN: 0921-4534
Official Date: December 1994
Dates:
DateEvent
December 1994UNSPECIFIED
Volume: 235
Number: Part 4
Number of Pages: 2
Page Range: pp. 2353-2354
Publication Status: Published
Title of Event: International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV (M2S-HTSC IV)
Location of Event: GRENOBLE, FRANCE
Date(s) of Event: JUL 05-09, 1994

Data sourced from Thomson Reuters' Web of Knowledge

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