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 A project funded by [[http://www.agence-nationale-recherche.fr/en/|The French National Research Agency]] for the period 20/12/2010 - 19/12/2014.
 **The main objective of the present proposal is to observe the effect of parity violation in the vibrational spectra of chiral molecules by high resolution laser spectroscopy.**
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 Chirality is a fundamental concept in physics, chemistry and biology. In physics objects of opposite chirality are connected by the parity operation (P), which combines with charge conjugation (C) and time reversal (T) in the CPT theorem: a mirror universe, where all particle positions are reflected about some plane (parity inversion), where all particles are replaced by their anti-particles (charge conjugation) and where all their momenta reversed (time reversal), will evolve according to the same physical laws as the present universe. Although the theorem states that the combined CPT symmetry is conserved by all physical processes and by the four fundamental forces (gravitation, the electromagnetic force, the strong and the weak force), individual symmetries may be broken. Of interest here is that parity may not be conserved in processes involving the weak force, as suggested by [[http://link.aps.org/doi/10.1103/PhysRev.104.254|Lee and Yang in 1956]]  and soon after confirmed by [[http://link.aps.org/doi/10.1103/PhysRev.105.1413|experiment]].

ncpchem

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