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condensed matter physics

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9 How can we “exchange” particles, since they are “identical”? Oct 20 '15
7 $(\frac{1}{2},\frac{1}{2})$ and $(\frac{1}{2},0)\bigoplus (0,\frac{1}{2})$ [duplicate] Dec 2 '15
7 What is the physical meaning of the Fourier transformed Coulomb potential $1/q^2$? Aug 24 '18
5 Can we regard field operator $\Psi (x)$ as $a_{x}^{\dagger }$ ,$a_{x}$? Nov 4 '14
5 What is canonical momentum? Jun 16 '15
4 Why does holding something up cost energy while no work is being done? Aug 25 '18
4 The Pauli exclusion principle and the Pfaffian Dec 16 '18
4 Majorara zero mode in Ising chain, not exactly zero subtlety Apr 29 '16
3 Rank $L$ spherical harmonic tensor as a $2L+1$ dimensional Cartesian vector? Jan 16 '14
2 $E,H,\rho,\vec{j}$ intensive? $B,D,\Phi,\vec{A}$ extensive? Why not $ DdE,BdH ,\Phi\delta\rho,\vec{A}\cdot \delta \vec{j}$ as infinitesimal work? Apr 28 '14
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