NON-FERMI LIQUID BEHAVIOR OF A SYSTEM WITH SADDLE POINTS IN THE ENERGY
1995 ◽
Vol 09
(26n27)
◽
pp. 1753-1758
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Keyword(s):
The Poor
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We present a simple demonstration that the two-dimensional fermionic system with the energy ε(k)=kxky has a non-Fermi behavior. The calculation of the wave function renormalization constant Z will be performed using the “poor man’s renormalization” method and we will show that Z→0 with the infrared cutoff Λ as Z(Λ)=Λζ where ζ is a constant.
1959 ◽
Vol 3
(7)
◽
pp. 351-352
◽
2019 ◽
Vol 34
(21)
◽
pp. 1950117
2003 ◽
Vol 110
(1)
◽
pp. 107-114
◽
1997 ◽
Vol 497
(3)
◽
pp. 589-610
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