CHIRAL MOLECULES A CASE OF SPONTANEOUS SYMMETRY BREAKING ?
Gianni Jona-Lasinio Sapienza University of Rome, Italy

Infos Complémentaires

13h30 - Conf IV
24 rue Lhomond, Paris
Contact : benjamin.huard@ens.fr, aleksandra.walczak@ens.fr
http://www.phys.ens.fr/

Jeudi 30 mai 2013

According to Hund (1927) quantum mechanics forbids the existence of stable optically
active (chiral) molecules as they violate the invariance under parity of the Hamiltonian.
This paradox has attracted much attention ever since and there is not yet a
universally accepted explanation. I will contend that spontaneous symmetry breaking
provides a qualitative and quantitative explanation.

A second paradox concerning chiral molecules is the predominance of left handed
molecules (amino acids) in living matter. This may remind of the predominance of
matter over antimatter in the universe. I shall briefly discuss of how recent results in
non equilibrium statistical mechanics may offer a clue.

13h30 - Conf IV
24 rue Lhomond, Paris
Contact : benjamin.huard@ens.fr, aleksandra.walczak@ens.fr
http://www.phys.ens.fr/