Parity violation and critical temperature of non-interacting chiral molecules

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• 作者：Pedro Bargueñ ; o ; Isabel Gonzalo ; Ricardo P&#xe9 ; rez de Tudela ; Salvador Miret-Art&#xe9 ; s
• 刊名：Chemical Physics Letters
• 出版年：2009
• 出版时间：1 December 2009
• 年：2009
• 卷：483
• 期：4-6
• 页码：204-208
• 全文大小：297 K

文摘

Thermodynamical properties of non-interacting chiral molecules are studied under the two-state model in an asymmetric double well potential. The competition between thermal effects, the tunneling process and any pseudoscalar interaction (including electroweak parity violation) is governed by a critical temperature, T<sub>csub>, where the heat capacity displays a maximum, and the entropy and the population difference between left and right conformations show an inflection point. This population difference becomes appreciable at temperatures below T<sub>csub>, whereas, at higher temperatures, the racemization process is more and more important. The critical values of the entropy and heat capacity are constants and independent of the chiral system under study.