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FaDA
  • Member for 6 years, 6 months
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5 votes
3 answers
2k views

Can the kinetic energy be a function of the position vector?

4 votes
2 answers
348 views

Does the convergence of van Hove sequence equivalent to thermodynamic limit?

4 votes
1 answer
328 views

Is there a spontaneous symmetry breaking in finite-size Ising model with + boundary condition?

4 votes
0 answers
119 views

In renormalization group theory, why fixed point gives self-similar probability distribution

2 votes
1 answer
78 views

Why is $\langle{\dot A}A^* \rangle=0$ for dynamical variable $A$?

2 votes
1 answer
98 views

Qualitative relationship between a function f(x) and its fourier components

2 votes
1 answer
1k views

Bloch theorem and Bloch states

2 votes
2 answers
1k views

Is Bloch theorem suitable for correlated electrons?

2 votes
1 answer
218 views

Question about the autocorrelation function of the fluctuating force in the Langevin model for Brownian motion

2 votes
1 answer
468 views

Does the postulate of equal a priori probability apply only to equilibrium states or to all states satisfying the constraints?

1 vote
2 answers
295 views

Question about the wave function of a travelling wave

1 vote
1 answer
74 views

Definition of linear and non-linear dynamic susceptibility

1 vote
1 answer
150 views

Question about ergodicity and the evolution of the probability distribution under Liouville's theorem

1 vote
2 answers
289 views

why drift velocity proportional to driving force

1 vote
1 answer
210 views

Question about using Liouville's theorem to calculate time evolution of ensemble average

1 vote
0 answers
70 views

Question about the Markovian property of the velocity of a Brownian particle following Langevin equation

1 vote
1 answer
74 views

How to prove $e^{it\hat X}=e^{it\hat Y}+\int_0^te^{i(t-\tau)\hat X}i(\hat X-\hat Y)e^{i\tau\hat Y}d\tau$ where $\hat X$ and $\hat Y$ are operators?

0 votes
0 answers
80 views

Critical exponent $\nu$ of 3d Ising model

0 votes
1 answer
755 views

Question about the periodic potential in a crystal

0 votes
2 answers
235 views

Two ways to define wave function in Heisenberg picture

0 votes
1 answer
100 views

Is ${e^{ikx}} \to {x^2}$ when $k \to 0$

0 votes
0 answers
27 views

Can ${e^{ikx}}$ and the heaviside step funtion have similar physics content about the distribution of $x$?