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TZID:Europe/Vienna
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DTSTART:20180325T030000
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DTSTART:20181028T020000
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BEGIN:VEVENT
DTSTAMP:20260405T175458Z
UID:59c8cf07a1319441542031@ist.ac.at
DTSTART:20180927T160000
DTEND:20180927T180000
DESCRIPTION:Speaker: David Mitrouskas\nhosted by Robert Seiringer\nAbstract
 : In the talk I will present a recent result about the ground state energy
  for N identical fermions in a two-dimensional box of volume L2 interactin
 g with an external point scatterer. Since the point scatterer can be consi
 dered as an impurity particle of infinitemass\, the model is a limit case 
 of the Fermi polaron. We prove that the ground state energy in the limit o
 f high density N/L2>>1 is given by the so-called polaron energy.The polaro
 n energy is an energy estimate based on trial states up to first order in 
 particle-hole expansion\, which was proposed by F. Chevy in the physics li
 terature. Therelative error in our result is shown to be small uniformly i
 n L. The strategy of our proof relies on a twofold Birman-Schwinger type a
 rgument applied to the many-particle Hamiltonian of the system. This is jo
 int work with Ulrich Linden.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:jdeanton@ist.ac.at
SUMMARY:David Mitrouskas: High Density Limit of the Fermi Polaron with Infi
 nite Mass
URL:https://talks-calendar.ista.ac.at/events/1377
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