[Theory-seminars] Theory seminar next Monday - Yukari Yamauchi

[Astrid Hiller Blin]

Dear all,

Next Monday, September 20th at 1:00 PM, Yukari Yamauchi will give a seminar
on https://jlab.bluejeans.com/319089525/6769, please see below for details.

*Theory seminar*
Monday September 20th, 1:00 PM

*Yukari Yamauchi* (University of Maryland) will speak about "The real-time
dynamics of lattice field theories - classical and quantum approaches".

*Abstract:*
In heavy-ion physics, phenomenological models along with hydrodynamics have
successfully described the dynamics of QCD in the strongly-coupled regime.
Some of the transport coefficients in the hydrodynamic description of QCD,
such as the shear viscosity, could be computed naturally on a quantum
computer. I will briefly discuss building blocks of the quantum computation
for the shear viscosity.
Since sufficiently large quantum computers are unlikely to be available in
the near future, it is important to explore approaches to the computation
of transport coefficients on classical computers. Transport coefficients
are naively difficult to obtain from first principles on a classical
computer due to the sign problem. One way to address sign problems is to
deform the contour of integration in the path integral to the complex
plane. I will explain the conjectured existence of such deformed contours
that solve the sign problem completely for a certain class of problems. The
class includes many physically interesting lattice field theories.
Numerical methods to find such perfect contours will be explored.

We look forward to the seminar and to seeing you on Monday!
Astrid, Colin, and Patrick
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