[Landau ITP Seminars] Friday 13.09.2019

[Serge Krashakov]

Уважаемые сотрудники ИТФ,

На заседании Ученого совета ИТФ в пятницу 13 сентября будут заслушаны 
доклады:

1) Олег Андреев
*String breaking, diquarks and medium*

I will briefly discuss some aspects of the phenomenon of string breaking 
in QCD. Such a phenomenon is responsible for strong decays of hadrons. 
Mainly, I focus on what happens at finite baryon density.


2) Лев Щур (короткий доклад)
*Acceptance rate is a thermodynamic function in local Monte Carlo 
algorithms*

We study the properties of Markov chain Monte Carlo simulations of 
classical spin models with local updates. We derive analytic expressions 
for the mean value of the acceptance rate of the single-spin-flip 
algorithms for the one-dimensional Ising model. We find that for the 
Metropolis algorithm the average acceptance rate is a linear function of 
energy. We further provide numerical results for the energy dependence 
of the average acceptance rate for the 3- and 4-state Potts model, and 
the XY model in one and two spatial dimensions. In all cases, the 
acceptance rate is an almost linear function of the energy in the 
critical region. The variance of the acceptance rate is studied as a 
function of the specific heat.

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