A solvable quantum antiferromagnet model

Chakrabarti, Bikas K.; Inoue, Jun-ichi


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A solvable quantum antiferromagnet model

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/18642

Title:	A solvable quantum antiferromagnet model
Authors:	Chakrabarti, Bikas K. Browse this author
Authors:	Inoue, Jun-ichi Browse this author →KAKEN DB
Keywords:	Statistical mechanics
	Antiferromagnets
	Quantum spin systems
Issue Date:	Jun-2006
Publisher:	Indian Journal of Physics
Journal Title:	Indian Journal of Physics
Volume:	80
Issue:	6
Start Page:	609
End Page:	612
Abstract:	We introduce a quantum antiferromagnet model, having exactly soluble thermodynamic properties. It is an infinite range antiferromagnetic Ising model put in a transverse field. The free energy gives the ground state energy in the zero temperature limit and it also gives the low temperature behaviour of the specific heat, the exponential variation of which gives the precise gap magnitude in the excitation spectrum of the system. The detailed behaviour of the (random sublattice) staggard magnetisation and susceptibilities are obtained and studied near the N\'eel temperature and the zero temperature quantum critical point.
Description:	既に下記の物理・数学関連のプレプリントサーバに登録されています。
Relation:	http://xxx.lanl.gov/abs/cond-mat/0508218
Relation:	http://chaosweb.complex.eng.hokudai.ac.jp/~j_inoue/preprints.html
Type:	article (author version)
URI:	http://hdl.handle.net/2115/18642
Appears in Collections:	情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 井上純一

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