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7 votes
3 answers
884 views

How does wave function collapsing fit into QFT?

2 votes
1 answer
97 views

Why is the worldvolume theory a $U(1)$ gauge theory?

2 votes
1 answer
109 views

Classical mechanics in coadjoint orbits

1 vote
1 answer
833 views

How do you find the Schmidt decomposition of many-qubit states?

1 vote
0 answers
82 views

Verifying equations of motion of Lagrangian [closed]

0 votes
1 answer
716 views

Show Lagrangian is invariant under infinitesimal $SO(3)$ transformation

0 votes
1 answer
219 views

Fix temporal gauge $A_0=f$ using an appropriate gauge transformation

0 votes
1 answer
148 views

Finding helicity eigenstates

0 votes
1 answer
58 views

Why is the free energy unitless when taking the thermodynamic limit?