1,297 reputation
213
bio website
location Nanjing, China
age 27
visits member for 1 year, 5 months
seen Jul 8 at 20:59

I'm a graduate student studying theoretical condensed matter physics in Nanjing university, China.

My current interest is in the topics of symmetry, gauge theory, and topology in condensed matter theory.


Jul
8
revised Naive questions on the classical equations of motion from the Chern-Simons Lagrangian
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Jul
8
revised Naive questions on the classical equations of motion from the Chern-Simons Lagrangian
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Jul
8
asked Naive questions on the classical equations of motion from the Chern-Simons Lagrangian
Jul
2
awarded  Inquisitive
Jul
2
awarded  Curious
Jun
29
revised Degenerate perturbation theory applied to topological degeneracy?
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Jun
27
comment Degenerate perturbation theory applied to topological degeneracy?
For the Toric code example, what specific perturbations you added to obtain the effective Hamiltonian which is a sum of the 4 string/logical operators? And could you explicitly show the form of the effective Hamiltonian to me?
Jun
20
revised What do we mean when we say Bose condensation? And why can't fermions condense if they don't pair?
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Jun
20
suggested suggested edit on What do we mean when we say Bose condensation? And why can't fermions condense if they don't pair?
Jun
2
comment Are elementary particles actually more elementary than quasiparticles?
@Xiao-Gang Wen Prof.Wen, in the string-net picture, can the emergent 'electrons' as the low-energy collective excitations survive at high temperatures or high energies? Since in our world, the electrons seem always exist at high temperatures as well as low temperatures.
Jun
1
revised Why is the projective symmetry group (PSG) called projective?
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Jun
1
revised Why is the projective symmetry group (PSG) called projective?
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Jun
1
revised Why is the projective symmetry group (PSG) called projective?
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Jun
1
asked Why is the projective symmetry group (PSG) called projective?
May
30
comment What does it mean for a Hamiltonian or system to be gapped or gapless?
Thank you very much. And is there any 2D topologically ordered system whose topological ground-state degeneracy depends on the choice of sequence of sizes as we take the thermodynamic limit?
May
27
comment Difference of the O(N) Non-linear Sigma model and SO(N) Non-linearSigma model
@ hongchaniyi For the classical system, it should be $O(3)$; for the quantum one, it should be $SO(3)$, since the transformations should preserve the commutation relations in quantum mechanics.
May
27
comment Naive questions on Goldstone modes and a possible duality relation?
@Adam Thanks for your comment. "And in 1D, bosons and fermions are essentially the same." I'm sorry that I do not know about this fact, can you explain it more specifically or could you provide me some related references? Thank you very much.
May
27
revised Naive questions on Goldstone modes and a possible duality relation?
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May
27
revised Naive questions on Goldstone modes and a possible duality relation?
edited tags
May
27
revised Naive questions on Goldstone modes and a possible duality relation?
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