A new lemma of the optical equivalence theorem: Applications in theoretical chemistry and new challenges

Title : A new lemma of the optical equivalence theorem: Applications in theoretical chemistry and new challenges

Abstract:

The Optical Equivalence Theorem demonstrates the equivalence between the expectation value of an operator in the opportune Hilbert space  and the expectation value of the pertinent  functional representation in the phase space formulation with respect to a suitable distribution; for the purposes of this demonstration, a phase space reprenstation is chosen, which does not involve the Number operator. The Optical Equivalence Principle allows one to construct a sequence of the density operator. A new lemma of the Optical Equivalence Theorem is demonstrated, after which there is associated with the quasi-probability distribution and improved functional reprentation as far as the allowed expansion order is concerned; the construction is apt to codify almost-inifinite-momentum states. A compact-support control weighting function is introduced, to display the action of operators of high-intensity fields, whose states are determined. Applications in Theoretical chamistry are provided with.  Applications are explained within molecular dynamics trajectories: the atomic coordinates at specific times are framed in the phase space, where the new improved reprentation of the quasi-probability distribution is used to improve the long-time-limit error calculation in  the quantum fluctuations, quantum jumps (also in lasing), comparison of chemical shift with MNR spectroscopy for control of composition; Markovv modelisation: the long-timescale dynamics of molecular systems is analysed as consisting of probabilistic jumps between est of states, which are now newly issued as those which are the pertinent states of the new improved functional representation:
 quantum fluctuation, transition to lasing, carrier energy states, comparison with Monte-Carlo simulation; mocular chemistry: protein stability and folding kinetics, coordinate shift with determination of transition states, transmission probability, definition of entropic reaction coordinates; laser molecule activation; transition state spectroscopy: potential energy surfaces are newly established within the new representation of the phase space; molecular activation: the process of the molecular activation is framed within the new representation of the states within the new representation of the phase space obtained after the new improved representation of the probablity- distribution sequence. New challenges are envisaged.

Biography:

Assoc. Prof. Dr. Orchidea Maria Lecian graduated in Thoeretical Physics at Sapienza University of Rome and ICRA, where sha also defended her PhD Thesis in Relativistic Astrphysics. She was poast-doctoral fellow at IHES, Bures-sur-Yvette, and iat Sapienza Univeristy of Rome. She participated in several intensive-research programs at Centre Emil Borel, Paris, at AEI-MPI Golm, at The Fields Institute for Research in Mathematical Sciences, Toronto, and at UPO in Vercelli.
She has been International Reserarcher and appointed Erasmus Lecturer at Comenius University, Bratislava as SAIA NS'P Fellow. She was Assistant professor at Sapienza Unviersity of Rome, and she was Visiting Professor at Kursk State Unviersity, Russia, with the Programme Education in Russia of the Russian Federtion. She has been Associate Professor at Sapienza University of Rome. She is memeber of diverse research consortia. She was awarded several scientific prizes. She has particpated in several national confrences and international ones. She is author of research papers, conference papers, review papers, invited papers, six books, encyclopedia entries and one book-chapter. She has participated as editor and as reviewer in several international Journals.