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Condensed Matter Seminars

ics Condensed Matter
Thursday, October 8, 2015
11:00 AM
Physics Building, Room 313*
Note special room.
Norman Tubman [Host: Israel Klich]
UIUC
"Quantum dissection of a covalent bond with the entanglement spectrum"
ABSTRACT:

Theoretical analysis of molecular bonding is quite successful in many regards, but leaves open many mysteries, even for simple diatomic molecules. Such mysteries have been highlighted in several recent theoretical studies in which there have been claims of a new type of bond identified in the carbon dimer.  These studies have been quite controversial.    To address these claims directly from the quantum mechanical wave function, we developed a new approach to describe chemical bonds from ideas originating in the field of quantum entanglement. This approach is based on breaking up a many body wave function into real space pieces, which is formally known as the entanglement spectrum.  We are able to address the controversial C2 molecule with these tools, and demonstrate its bonding properties, which includes an inverted fourth bond.  The ideas considered in this work provide a significantly more detailed picture of bonding than allowed by previous techniques.

To add a speaker, send an email to phys-speakers@Virginia.EDU. Please include the seminar type (e.g. Condensed Matter Seminars), date, name of the speaker, title of talk, and an abstract (if available).