Physics of π-meson condensation and high temperature cuprate superconductors

被引:0
|
作者
Sushkov, O. P. [1 ]
机构
[1] Univ New S Wales, Sch Phys, Sydney, NSW, Australia
关键词
HEISENBERG-ANTIFERROMAGNET; QUANTUM ANTIFERROMAGNET; CHIRAL SYMMETRY; NUCLEAR-MATTER; LAGRANGIANS; FIELDS; OXIDES; PHASE; STATE;
D O I
10.1134/S1063778809080092
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The idea of condensation of the Goldstone pi-meson field in nuclear matter had been put forward a long time ago. However, it was established that the normal nuclear density is too low, it is not sufficient to condensate pi mesons. This is why the pi condensation has never been observed. Recent experimental and theoretical studies of high-temperature cuprate superconductors have revealed condensation of Goldstone magnons, the effect fully analogous to the pi condensation. The magnon condensation has been observed. It is clear now that quantum fluctuations play a crucial role in the condensation, in particular they drive a quantum phase transition that destroys the condensate at some density of fermions.
引用
收藏
页码:1340 / 1345
页数:6
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