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Conditions for stable equilibrium of systems at negative absolute temperatures

Journal Article · · Physics Letters
The conditions for stability of the spin system at positive and negative absolute temperatures are discussed. It is concluded that a thermodynamical system may exist in an equilibrium state at negative absolute temperatures and the condition for stability of this system is connected with the positive (at positive absolute temperatures) or negative (at negative absolute temperatures) definition of the quadratic form delta 2E, which is the second variation of the internal energy.
Research Organization:
Palacky Univ., Olomouc, Czechoslovakia
Sponsoring Organization:
USDOE
NSA Number:
NSA-18-004343
OSTI ID:
4132705
Journal Information:
Physics Letters, Journal Name: Physics Letters Journal Issue: 2 Vol. 7; ISSN 0031-9163
Publisher:
Elsevier
Country of Publication:
Country unknown/Code not available
Language:
English

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