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SEQUENCE:1
UID:UW-Physics-Event-8738
DTSTART:20240423T230000Z
DTEND:20240423T230000Z
DTSTAMP:20260413T223508Z
LAST-MODIFIED:20240419T141009Z
LOCATION:Join Zoom Meeting https://berkeley.zoom.us/j/91230714547 Mee
ting ID: 912 3071 4547
SUMMARY:Microscopic calculations of neutrino scattering and absorption
in warm dense nuclear matter\, Network in Neutrinos\, Nuclear Astroph
ysics\, and Symmetries (N3AS) Seminar\, Prof. Jeremy Holt \, Texas A&M
University
DESCRIPTION:Numerical simulations of core-collapse supernovae\, proto-
neutron star cooling\, and neutron star mergers require modeling of ne
utrino scattering and reaction rates that are sensitive to medium effe
cts\, including nuclear mean fields and correlations. In the past\, it
has been found that nuclear mean fields play an especially important
role for enhancing electron-neutrino absorption and suppressing antine
utrino absorption in warm and neutron-rich nuclear matter. In the pres
ent study\, we investigate nuclear correlations on equal footing to me
an fields through the random phase approximation (RPA) computed from m
icroscopic models of the nucleon-nucleon interaction derived from chir
al effective field theory. We find that RPA calculations generically i
ndicate the presence of nuclear collective modes\, which at low neutri
no energies tend to suppress neutrino absorption and enhance antineutr
ino absorption\, opposite to the effect of mean fields. We conclude th
at nuclear correlations should be treated on a consistent footing with
mean fields in deriving neutrino charged-current reaction cross secti
ons for astrophysical simulations.
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\nTopic: N3AS online se
minar series - Spring 2024 #7
\n
\nNOTE: All participants and
hosts are now required to sign into a Zoom account prior to joining me
etings hosted by UC Berkeley.
\n
\nPLEASE NOTE THE UNUSUAL TIM
E.
URL:https://www.physics.wisc.edu/events/?id=8738
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