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seen Aug 23 at 14:50

Nov
25
awarded  Disciplined
Oct
16
comment A naive question on the $U(1)$ gauge transformation of electromagnetic field?
A system is not only determined by its Hamiltonian, but also by its Hilbert space. U(1) gauge theory can come from constraint of your Hilbert space.
Oct
16
comment Is the $SU(2)$ flux defined in the context of Projective Symmetry Group(PSG) an observable quantity?
In the field theory language, for nonabelian gauge theory, the observable (or Wilson loop) is Tr(...)
Sep
10
awarded  Teacher
Sep
10
answered Different invariant gauge groups (IGG) on different lattices with the same form mean-filed Hamiltonian?
May
12
asked How to understand topological order at finite temperature?
Mar
20
awarded  Supporter
Jan
23
asked Notation in Spin Liquid
Oct
3
awarded  Student
Oct
3
asked How to measure Projective Symmetry Group in spin liquid?