User user26143

45 votes

4 answers

3k views

Does quantum mechanics violate the equivalence principle?

asked Aug 1, 2013 at 13:50

24 votes

2 answers

13k views

Differences between symmetric, Hermitian, self-adjoint, and essentially self-adjoint operators

asked Jun 22, 2013 at 17:18

22 votes

7 answers

14k views

Why was quantum mechanics regarded as a non-deterministic theory?

asked May 2, 2014 at 21:08

21 votes

1 answer

1k views

LSZ reduction vs adiabatic hypothesis in perburbative calculation of interacting fields

asked Sep 25, 2014 at 8:08

17 votes

1 answer

2k views

Is non-relativistic quantum field theory equivalent with quantum mechanics?

asked Mar 10, 2014 at 13:15

16 votes

2 answers

2k views

A question about causality and Quantum Field Theory from improper Lorentz transformation

asked May 11, 2014 at 11:49

14 votes

2 answers

947 views

Curved spacetime as a coherent state in string theory

asked Sep 8, 2013 at 22:24

12 votes

1 answer

3k views

Why Weyl invariance is important for consistent string theory?

asked Aug 16, 2013 at 16:46

12 votes

1 answer

684 views

A question about the higher-order Weyl variation for the geodesic distance

asked Aug 6, 2013 at 19:16

11 votes

2 answers

2k views

Semantic problem about renormalizability

asked Dec 3, 2013 at 19:51

11 votes

2 answers

449 views

From representations to field theories

asked Mar 7, 2014 at 12:45

10 votes

6 answers

2k views

Schrödinger's cat and the difficulty of macroscopic superposition state

asked Mar 2, 2014 at 14:26

9 votes

1 answer

902 views

How to understand the Lagrangian of the standard model, effective or "fundamental"?

asked Sep 16, 2013 at 18:09

9 votes

1 answer

289 views

About the stability of the ground state of the bosonic string

asked Jul 14, 2013 at 16:35

8 votes

2 answers

2k views

What is the most general expression for the coordinate representation of momentum operator?

asked Jul 6, 2013 at 23:56

8 votes

1 answer

345 views

A question about conformal transformation in Polchinski's string theory

asked Jul 17, 2013 at 2:08

8 votes

2 answers

2k views

Deriving the transformation under Weyl rescaling in Polchinski eq. (1.2.31)

asked Jul 10, 2013 at 13:01

8 votes

2 answers

1k views

Compute the central charge of $bc$ conformal field theory

asked Jul 22, 2013 at 0:59

8 votes

1 answer

496 views

Could dark matter be a kind of Goldstone boson?

asked Nov 3, 2013 at 8:01

8 votes

0 answers

367 views

Is that possible to derive Landau-Fermi liquid theory from microscopic equation?

asked Jul 12, 2014 at 10:40

7 votes

1 answer

231 views

Where do $X_0^{-d}$ and $G'_r$ come from in Polchinski Eq. (6.2.13)?

asked Jul 6, 2014 at 19:37

7 votes

2 answers

1k views

Time-dependent Schrodinger equation from variational principle

asked May 29, 2014 at 6:14

7 votes

1 answer

787 views

What is the motivation for introducing "ontological state" in 't Hooft's deterministic quantum mechanics

asked Jun 12, 2014 at 7:19

7 votes

2 answers

201 views

Has the possibility of Higgs boson being a composite particle excluded already?

asked Jul 27, 2014 at 19:13

6 votes

1 answer

922 views

Is entangled state after measurement still an entangled state?

asked Aug 9, 2014 at 6:41

6 votes

2 answers

1k views

What is the analogy of $|x\rangle$ in quantum field theory?

asked Jul 23, 2014 at 12:37

6 votes

1 answer

551 views

Causality in QFT from vanishing commutator and the EPR paradox

asked Feb 23, 2014 at 20:43

6 votes

0 answers

405 views

A question about spontaneous symmetry breaking at macroscopic limit

asked Feb 6, 2014 at 10:25

6 votes

1 answer

227 views

A question about the coupling between string and gauge field $A_{\mu}$

asked Sep 11, 2013 at 18:49

6 votes

1 answer

912 views

A question about BRST current in bosonic string theory

asked Aug 21, 2013 at 20:42

Stack Exchange Network

89 Questions

Does quantum mechanics violate the equivalence principle?

Differences between symmetric, Hermitian, self-adjoint, and essentially self-adjoint operators

Why was quantum mechanics regarded as a non-deterministic theory?

LSZ reduction vs adiabatic hypothesis in perburbative calculation of interacting fields

Is non-relativistic quantum field theory equivalent with quantum mechanics?

A question about causality and Quantum Field Theory from improper Lorentz transformation

Curved spacetime as a coherent state in string theory

Why Weyl invariance is important for consistent string theory?

A question about the higher-order Weyl variation for the geodesic distance

Semantic problem about renormalizability

From representations to field theories

Schrödinger's cat and the difficulty of macroscopic superposition state

How to understand the Lagrangian of the standard model, effective or "fundamental"?

About the stability of the ground state of the bosonic string

What is the most general expression for the coordinate representation of momentum operator?

A question about conformal transformation in Polchinski's string theory

Deriving the transformation under Weyl rescaling in Polchinski eq. (1.2.31)

Compute the central charge of $bc$ conformal field theory

Could dark matter be a kind of Goldstone boson?

Is that possible to derive Landau-Fermi liquid theory from microscopic equation?

Where do $X_0^{-d}$ and $G'_r$ come from in Polchinski Eq. (6.2.13)?

Time-dependent Schrodinger equation from variational principle

What is the motivation for introducing "ontological state" in 't Hooft's deterministic quantum mechanics

Has the possibility of Higgs boson being a composite particle excluded already?

Is entangled state after measurement still an entangled state?

What is the analogy of $|x\rangle$ in quantum field theory?

Causality in QFT from vanishing commutator and the EPR paradox

A question about spontaneous symmetry breaking at macroscopic limit

A question about the coupling between string and gauge field $A_{\mu}$

A question about BRST current in bosonic string theory