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[Fizinfo] Atomki-szeminárium

Chronological Thread 
  • From: Zoltan Mate <mate AT>
  • To: fizinfo AT
  • Subject: [Fizinfo] Atomki-szeminárium
  • Date: Thu, 19 Oct 2006 13:24:49 +0200 (CEST)
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  • List-id: "ELFT H&#205;RAD&#211;" <>

Az MTA Atommagkutató Intézetének nagy előadójában
(Debrecen, Bem tér 18/c. 12. ép. III. em.)
2006. október 25-én, SZERDÁN 11:00-kor

Nobuyasu ITO
(The University of Tokyo)

Nonequilibrium relaxation analysis
on phase and transition

címmel előadást tart.
Az előadás előtt 10:30-tól tea.
Vendégeket szívesen látunk.

Máté Zoltán

Well-established simulation method to study the thermal phases and
transitions is the so-called equilibrium method, in which one firstly
realizes the equilibrium ensemble of a finite system and then extrapolates
the results to infinite system. This equilibrium strategy traces over the
standard theory of the thermal statistical mechanics, and the idea of the
thermodynamic limit. Recently, alternative simulation strategy was
proposed. It analyzes the nonequilibrium relaxation (NER) process and it
is called the NER method. There are some advantages in the NER method.
First of all, it provides simpler analyzing procedure. This implies the
less systematic error which is inevitable in the simulation and provides
efficient resource usage. Furthermore, the NER method easily treats not
only the thermodynamic limit but also other limits: for example,
finite-time behavior of infinite system. So the NER method cultivates the
new fields of the statistical physics. Application of the NER method has
been expanding to various problems: from basic first- and second-order
transitions to advanced and exotic phases like chiral, KT spin-glass and
quantum phases. From these studies, not only the improvements in accuracy
like better estimations of transition point and exponents, but also
qualitative developments have been provided. For example, the universality
class of random system, the nature of the two-dimensional melting and the
scaling behavior of the spin-glass aging phenomena have been shown.
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