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seen Nov 14 '13 at 1:19

Josephine stepped on my aircraft.


Jan
26
asked Where to learn Temperature Dependent Conductivity induced by Electron-Phonon Interaction?
Jan
14
revised Will Anderson's Poor Man's Scaling loose its effect when band width is small?
edited tags
Jan
12
asked Will Anderson's Poor Man's Scaling loose its effect when band width is small?
Jan
11
asked What is Resonance Width? Why we use it to distinguish different Regimes of the Anderson Model
Dec
13
comment What is different between resolvent and green function
See above @harken .
Dec
13
comment What is different between resolvent and green function
Statistical Mechanics of Nonequilibrium Process by Dimitri Zubarev
Nov
25
asked What is different between resolvent and green function
Oct
16
accepted Topological Order and Entanglement
Oct
5
awarded  Scholar
Oct
1
comment What does the term liquid mean in condensed matter physics?
What can 'motion' mean in quantum sense?
Oct
1
comment What does the term liquid mean in condensed matter physics?
Thanks, can you provide an example about the global order liqiud possesses and quantum liquid possesses, respectively?
Oct
1
awarded  Supporter
Oct
1
asked What does the term liquid mean in condensed matter physics?
Oct
1
comment Topological Order and Entanglement
Thanks. But is the definition of long/short entanglement through LU transformation equal to the definition from entanglement entropy, which says short range entanglement state gives zero entropy in large scale?
Sep
26
comment Entanglement measure to classify topological ordered states
Thanks, but what about the hierarchy FQH states, where filling factor $v=\frac{p}{q}=\frac{r^2\tilde{p}}{s^2\tilde{q}}$. The quantum dimension is not related one by one with degeneracy $\tilde{q}$.
Sep
23
asked Entanglement measure to classify topological ordered states
Sep
21
awarded  Editor
Sep
21
revised Matrix element in quantum mechanics
added 92 characters in body
Sep
21
comment Matrix element in quantum mechanics
Let redefine the notion: the creation operator $\phi_{k}=c_k$ if $k<k_F$; $\phi_{k}=c^+_k$ if $k>k_F$. And $\bar{\phi_k}$ to be the hermit conjugate of $\phi_k$. Then, $U=\sum_{\alpha\beta}U_{\alpha\beta}\phi_{\alpha}\bar{\phi_{\beta}}$, we can get $<\gamma|U|\delta>=U_{\gamma\delta}$ if we do in zero temperature and throw away the second term. That is correct. But what if the finite temperature case? For example, when $\gamma,\delta>k_F$, we can get $<\gamma|U|\delta>=U_{\gamma\delta}(1-f_{\gamma})(1-f_{\delta})$. Here $f$ is fermi distribution rather than $\theta$ function.
Sep
21
comment Matrix element in quantum mechanics
Thanks for your reply. Your suggestion is correct, I indeed left the excition of hole.