TYPECondensed Matter Seminar
Speaker:Ronen Weiss
Time:12:30 - 13:30
Location:Lidow Nathan Rosen (300)

Short-range physics and universality in the quantum many-body problem


Quantum many-body systems are at the heart of various research fields, including nuclear, atomic, and condensed-matter physics. Fascinated by the beauty and elegance of universal features common to very different and complex many-body systems, I focus on studying universality and on utilizing it for developing predictive tools for the many-body system. Specifically, I will present a theory for describing short-range physics in such systems. To demonstrate its validity, I will consider nuclear systems, and show how it captures quantitatively the impact of short-range correlated pairs on different quantities, including coordinate-space and momentum-space distributions, spectral functions, and electron-scattering cross sections. I will also discuss my recent work on extending the range of validity of the theory to larger distances, in order to develop a systematic framework for describing short-range physics and utilizing it for the description of general observables of the many-body system. Some of such quantities are currently not accessible by any other method. I will discuss the connection to different experimental efforts and relevance to different subfields of physics.