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理学部 物理学科

Researcher List >> Hal Tasaki
 

Hal Tasaki

 
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NameHal Tasaki
URLhttp://www.gakushuin.ac.jp/~881791/halJ.htm
AffiliationGakushuin University
SectionFaculty of Science Department of Physics
Job titleProfessor
Degree理学博士
J-Global ID201301011914383202

Research Interests

 
スピン系の相転移・臨界現象 ,非平衡定常系の熱力学の構築 ,量子統計力学の基礎づけ ,強相関電子系における強磁性の起源 ,量子多体系 ,数理物理学 ,phase transition and critical phenomena in spin systems ,construction of thermodynamics for nonequilibrium steady state ,foundation of quantum statistical mechanics ,origin of ferromagnetism in strongly interacting electron systems ,quantum many-body systems ,mathematical physics

Research Areas

 
  • Natural sciences / Mathematical physics and basic theory / 

Research History

 
1990
 - 
1999
:学習院大学理学部助教授   
 
1990
 - 
1999
:Gakushuin University   
 
1999
   
 
-:学習院大学理学部教授   
 
1999
   
 
-:Gakushuin University   
 
1988
 - 
1990
:学習院大学理学部講師   
 

Awards

 
1997
第一回久保亮五記念賞
 
1997
1st Kubo memorial prize
 

Misc.

 
 
Sheldon Goldstein   Takashi Hara   Hal Tasaki   
PHYSICAL REVIEW LETTERS   111(14)    Oct 2013   
We prove two theorems concerning the time evolution in general isolated quantum systems. The theorems are relevant to the issue of the time scale in the approach to equilibrium. The first theorem shows that there can be pathological situations in ...
 
Hal Tasaki   
PHYSICAL REVIEW LETTERS   110(23)    Jun 2013   
In a system of interacting f = 1 bosons (in the subspace where the total spin in the z direction is vanishing), we prove inequalities for the ground state expectation value of the density of spin-0 bosons. The inequalities imply that the ground st...
 
Hosho Katsura   Hal Tasaki   
PHYSICAL REVIEW LETTERS   110(13)    Mar 2013   
We prove basic theorems about the ground states of the S = 1 Bose-Hubbard model. The results are quite universal and depend only on the coefficient U-2 of the spin-dependent interaction. We show that the ground state exhibits saturated ferromagnet...
 
Keiji Saito   Hal Tasaki   
JOURNAL OF STATISTICAL PHYSICS   145(5) 1275-1290   Dec 2011   
Recently, in their attempt to construct steady state thermodynamics (SST), Komatsu, Nakagawa, Sasa, and Tasaki found an extension of the Clausius relation to nonequilibrium steady states in classical stochastic processes. Here we derive a quantum ...
 
Yohei Morikuni   Hal Tasaki   
JOURNAL OF STATISTICAL PHYSICS   143(1) 1-10   Apr 2011   
We consider a (small) quantum mechanical system which is operated by an external agent, who changes the Hamiltonian of the system according to a fixed scenario. In particular we assume that the agent (who may be called a demon) performs measuremen...

Books and Other Publications

 
 
朝日出版社   2012   (ISBN:4255006768)   
 
培風館   2008   (ISBN:4563024384)   
 
培風館   2008   (ISBN:4563024376)   
 
岩波書店   2000      
 
培風館   2000   (ISBN:4563024325)   

Presentations

 
 
第 23 回統計力学国際会議   2007   
 
研究会「量子解析におけるミクロマクロ双対性」   2006   
 
日本物理学会   2005   
 
研究会「量子解析におけるミクロマクロ双対性」   2005   

Professional Memberships

 
 
   
 
国際数理物理学会
 
   
 
アメリカ物理学会
 
   
 
日本物理学会
 
   
 
International Association of Mathematical Physics
 
   
 
American Physical Society