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Aug
4
answered How can we calculate pion decay constant in Chiral Perturbation Theory ?
Jul
21
answered No diffusion term in conservation of mass in Navier-Stokes equations?
Jul
21
comment How can one derive the Ohm's Law?
Yes, see physics.stackexchange.com/q/40907
Jul
2
awarded  Nice Answer
Jun
30
revised Why can't the Navier Stokes equations be derived from first principle physics?
added 137 characters in body
Jun
29
answered Why can't the Navier Stokes equations be derived from first principle physics?
Jun
28
awarded  Critic
Jun
23
revised How do Cooper pairs form?
added 94 characters in body
Jun
23
comment Why is the chiral symmetry only $SU(3) \times SU(3)$ and not $SU(6)$?
Then you would still have to write something like $\sigma_2u_R^\dagger$ instead of $u_L$ in your 6-component vector. In any case, you violate either $SU(3)_c$ (and baryon number $U(1)_V$) or Lorentz invariance.
Jun
23
comment How do Cooper pairs form?
Yes, of course. I meant ingredients beyond BCS, that are required to get condensation in the presence of the repulsive Coulomb force.
Jun
23
comment Why is the chiral symmetry only $SU(3) \times SU(3)$ and not $SU(6)$?
$L$ and $R$ are in the same representation of $SU(3)_c$, but in different representations of the Lorentz group (there is something wrong with your Dirac operator, by the way, now that you wrote in 2-component notation), so your proposed flavor symmetry mixes different representations of $SO(3,1)$.
Jun
22
comment Why is the chiral symmetry only $SU(3) \times SU(3)$ and not $SU(6)$?
$\bar{q}_Li\gamma^\mu D_\mu q_R=0$. Your symmetry does not act on the fields.
Jun
22
answered Boltzmann equation collisional operator in thermal equilibrium
Jun
21
answered How do Cooper pairs form?
Jun
16
comment Superfluid Fountain
At any temperature below the lambda point (2.2K) liquid helium is a mixture of a superfluid and a normal fluid. The superfluid fraction goes to zero as $T\to T_c$. If you set up a temperature gradient, then the normal fluid flows to low T, and the superfluid flows to high T. This is why the superfluid flows into the heated pipe. The seal ensures that the normal fluid cannot get out, and you get the fountain effect.
Jun
16
answered physics of the beaker experiment for superfluid helium
Jun
12
answered Interacting fermions on a lattice
Jun
8
revised Field theory for a finite temperature normal fluid
added 226 characters in body
Jun
8
revised Field theory for a finite temperature normal fluid
added 226 characters in body
Jun
8
answered Field theory for a finite temperature normal fluid