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| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 8 months |
| seen | 2 days ago | |
| stats | profile views | 45 |
Josephine stepped on my aircraft.
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Dec 13 |
comment |
What is different between resolvent and green function See above @harken . |
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Dec 13 |
comment |
What is different between resolvent and green function Statistical Mechanics of Nonequilibrium Process by Dimitri Zubarev |
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Nov 25 |
asked | What is different between resolvent and green function |
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Oct 16 |
accepted | Topological Order and Entanglement |
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Oct 5 |
awarded | Scholar |
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Oct 1 |
comment |
What does the term liquid mean in condensed matter physics? What can 'motion' mean in quantum sense? |
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Oct 1 |
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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? |
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Oct 1 |
awarded | Supporter |
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Oct 1 |
asked | What does the term liquid mean in condensed matter physics? |
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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? |
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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 $\tilde{q}$. |
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Sep 23 |
asked | Entanglement measure to classify topological ordered states |
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Sep 21 |
awarded | Editor |
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Sep 21 |
revised |
Matrix element in quantum mechanics added 92 characters in body |
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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. |
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Sep 21 |
comment |
Matrix element in quantum mechanics Thanks for your reply. Your suggestion is correct, I indeed left the excition of hole. |
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Sep 21 |
comment |
Matrix element in quantum mechanics Can this question possibily origins from fermi sea as ground state? Since if we take vacuum as ground state, $<\gamma|U|\delta>=U_{\gamma\delta}$ |
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Sep 21 |
asked | Matrix element in quantum mechanics |
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Sep 20 |
awarded | Student |
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Sep 20 |
asked | Topological Order and Entanglement |
