PAIR FLUCTUATIONS IN THE GROUND-STATE OF A 2-DIMENSIONAL ATTRACTIVE FERMI GAS
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), JUL 05-09, 1994, GRENOBLE, FRANCE.Full text not available from this repository.
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|
|Number of Pages:||2|
|Page Range:||pp. 2353-2354|
|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|
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