Temperature dependence of optical rotation study on parity-violating phase transition of D-, L-, and DL-alanine

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dc.creatorBai, Fan
dc.creatorZhang, Miao
dc.creatorWang, Wenqing
dc.date2002-10-27
dc.date2002-12-30
dc.date.accessioned2026-07-07T05:48:19Z
dc.date.available2026-07-07T05:48:19Z
dc.descriptionChiral molecules are characterized by a specific optical rotation angle. An experimental method was presented to dissect the temperature dependence of the optical rotation angle with the molecular chirality of D-alanine, L-alanine and DL-alanine crystals. Salam hypothesis predicted that quantum mechanical cooperative and condensation phenomena may give rise to a second order phase transition below a critical temperature linking the transformation of D-amino acids to L-amino acids due to parity-violating energy difference. The temperature- dependent measurement of the optical rotation angle of D-, L- and DL-alanine crystals provided the direct evidence of the phase transition, but denied the configuration change from D-alanine to L-alanine. New views on Salam hypothesis are presented to demonstrate its importance in the application of low temperature enantiomeric separation and the origin of biochirality.
dc.description13 pages,9 figures
dc.identifierhttps://arxiv.org/abs/physics/0210109
dc.identifierhttp://arxiv.org/abs/physics/0210109
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/84983
dc.subjectBiological Physics
dc.titleTemperature dependence of optical rotation study on parity-violating phase transition of D-, L-, and DL-alanine
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