"Finite size effect"의 두 판 사이의 차이

수학노트
둘러보기로 가기 검색하러 가기
imported>Pythagoras0
 
(다른 사용자 한 명의 중간 판 9개는 보이지 않습니다)
2번째 줄: 2번째 줄:
 
* Casimir effect in [[QED]] is one example of finite size effect
 
* Casimir effect in [[QED]] is one example of finite size effect
 
* the stress on the bounding surfaces when quantum field is confined to finite volume of space
 
* the stress on the bounding surfaces when quantum field is confined to finite volume of space
*  type of boundaries<br>
+
*  type of boundaries
 
** real material media
 
** real material media
 
** interface between two different phases of the vacuum of a field theory such as QCD, in which case colored field may only exist in the interior region
 
** interface between two different phases of the vacuum of a field theory such as QCD, in which case colored field may only exist in the interior region
20번째 줄: 20번째 줄:
 
*  Green's functions method
 
*  Green's functions method
 
** represents the vacuum expectation value of the product of fields
 
** represents the vacuum expectation value of the product of fields
 
 
==finite size effect and central charge==
 
* mass gap of order $1/N$ is the characteristic of conformal invariance
 
* finite-size correction term to the ground state energy
 
$$
 
E_0=N\epsilon_0-\frac{\pi c v_F}{6N} +O(\frac{1}{N^2}
 
$$
 
where $N$ denotes the number of sites in the spin chain
 
* finite-size corrections to largest eigenvalue of the transfer matrix
 
* low temperature asymptotics of free energy of quantum system
 
$$
 
F(\beta)=F_0-\frac{\pi c}{6v_F}\beta^{-2}+O(\beta^{-2})
 
$$
 
where $\beta=T^{-1}$ is the inverse temperature
 
  
  
 
==QFT interpretation of the Casimir effect==
 
==QFT interpretation of the Casimir effect==
  
 
 
 
  
 
   
 
   
  
 
==related items==
 
==related items==
 
+
* [[cosmological constant]]
* [[cosmological constant]]<br>
+
* [[CFT on cylinder]]
 
+
* [[Vacuum energy and Casimir effect]]
 
 
 
 
 
 
  
 
==books==
 
==books==
* Kimball A. Milton [http://gigapedia.com/items:links?id=216868 The Casimir Effect: Physical Manifestations of Zero-Point Energy]<br>
+
* Kimball A. Milton [http://gigapedia.com/items:links?id=216868 The Casimir Effect: Physical Manifestations of Zero-Point Energy]
 
* Claude Itzykson [http://www.springerlink.com/content/f374835722j24555/ Conformal invariance and finite size effects in critical two dimensional statistical models]
 
* Claude Itzykson [http://www.springerlink.com/content/f374835722j24555/ Conformal invariance and finite size effects in critical two dimensional statistical models]
 
* Michael Krech [http://www.amazon.com/Casimir-Effect-Critical-Systems/dp/9810218451 Casimir effect in critical systems]
 
* Michael Krech [http://www.amazon.com/Casimir-Effect-Critical-Systems/dp/9810218451 Casimir effect in critical systems]
  
+
 
  
 
==encyclopedia==
 
==encyclopedia==
69번째 줄: 47번째 줄:
  
  
+
==expositions==
 
+
* http://arxiv.org/abs/1505.04237
+
* https://docs.google.com/file/d/0B8XXo8Tve1cxaHFoSVV1QkZ6Y2M/edit
  
 
==articles==
 
==articles==
 
+
* Pearce, Paul A., and Andreas Klümper. ‘Finite-Size Corrections and Scaling Dimensions of Solvable Lattice Models: An Analytic Method’. Physical Review Letters 66, no. 8 (25 February 1991): 974–77. doi:10.1103/PhysRevLett.66.974.
 +
* Batchelor, Murray T., Michael N. Barber, and Paul A. Pearce. ‘Bethe Ansatz Calculations for the Eight-Vertex Model on a Finite Strip’. Journal of Statistical Physics 49, no. 5–6 (1 December 1987): 1117–63. doi:10.1007/BF01017563.
 
* Ian Affleck [http://dx.doi.org/10.1103/PhysRevLett.56.746 Universal term in the free energy at a critical point and the conformal anomaly], Phys. Rev. Lett. 56, 746–748 (1986)
 
* Ian Affleck [http://dx.doi.org/10.1103/PhysRevLett.56.746 Universal term in the free energy at a critical point and the conformal anomaly], Phys. Rev. Lett. 56, 746–748 (1986)
 
* H. W. J. Blöte, J. Cardy and M. P. Nightingale [http://dx.doi.org/10.1103/PhysRevLett.56.742 Conformal invariance, the central charge, and universal finite-size amplitudes at criticality], Phys. Rev. Lett. 56, 742–745 (1986)
 
* H. W. J. Blöte, J. Cardy and M. P. Nightingale [http://dx.doi.org/10.1103/PhysRevLett.56.742 Conformal invariance, the central charge, and universal finite-size amplitudes at criticality], Phys. Rev. Lett. 56, 742–745 (1986)
81번째 줄: 60번째 줄:
  
 
[[분류:개인노트]]
 
[[분류:개인노트]]
[[Category:research topics]]
 
 
[[분류:Number theory and physics]]
 
[[분류:Number theory and physics]]
 +
[[분류:migrate]]

2020년 11월 16일 (월) 08:53 기준 최신판

introduction

  • Casimir effect in QED is one example of finite size effect
  • the stress on the bounding surfaces when quantum field is confined to finite volume of space
  • type of boundaries
    • real material media
    • interface between two different phases of the vacuum of a field theory such as QCD, in which case colored field may only exist in the interior region
    • topology of space
  • the boundaries restrict the modes of the quantum fields
  • give rise to measurable and important forces


how to compute the Casimir effect

  • zero-point energy in the presence of the boundaries
    • sum over all modes
    • any kind of constraint or boudary conditions on the the zero-point modes of the quantum fields in question, including backgrounds such as gravity
    • In a model without boundary conditions, the Hamiltonian value associated wih the vacuum or ground state, called zero-point energy, is usually discarded because, despite being infinite, may be reabsorbed in a suitable redefinition of the energy origin
    • there are several ways to put such an adjustment into practice, normal ordering being oneof the most popular
  • Green's functions method
    • represents the vacuum expectation value of the product of fields


QFT interpretation of the Casimir effect

related items

books


encyclopedia


expositions

articles