naa a22 4500 510774555 CHVBK 20180411083226.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s12210-013-0224-6 doi (NATIONALLICENCE)springer-10.1007/s12210-013-0224-6 Barron Laurence Department of Chemistry, University of Glasgow, G12 8QQ, Glasgow, UK aut True and false chirality and absolute enantioselection [Elektronische Daten] [Laurence Barron] The discrete symmetries of parity P, time reversal T, and charge conjugation C are used to characterize the properties of chiral systems. The concepts of true chirality (time-invariant enantiomorphism) and false chirality (time-noninvariant enantiomorphism) that emerge provide an extension of Lord Kelvin's original definition of chirality to situations where motion is an essential ingredient thereby clarifying, inter alia, the nature of physical influences able to induce absolute enantioselection. Only a truly chiral influence lifts the degeneracy of chiral enantiomers and so may induce absolute enantioselection in all circumstances. Chiral enantiomers remain strictly degenerate under a falsely chiral influence, which may therefore not induce absolute enantioselection in a process that has reached thermodynamic equilibrium, but may do so in far-from-equilibrium processes via a breakdown in microscopic reversibility analogous to that observed in elementary particle processes under the influence of CP violation. Parity violation and CP violation are suggested to be manifestations of true and false cosmic chirality, respectively, and their possible roles in abiotic enantioselection discussed. Accademia Nazionale dei Lincei, 2013 Optical activity nationallicence Discrete symmetries nationallicence Absolute asymmetric synthesis nationallicence Parity violation nationallicence CP violation nationallicence Biomolecular homochirality nationallicence Rendiconti Lincei Springer Milan 24/3(2013-09-01), 179-189 2037-4631 24:3<179 2013 24 12210 https://doi.org/10.1007/s12210-013-0224-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12210-013-0224-6 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Barron Laurence Department of Chemistry, University of Glasgow, G12 8QQ, Glasgow, UK aut NATIONALLICENCE 773 0- Rendiconti Lincei Springer Milan 24/3(2013-09-01), 179-189 2037-4631 24:3<179 2013 24 12210 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer