User Michael Williams

11 votes

3 answers

1k views

Is it possible for a lightning strike to hit the ground if there are high rise buildings nearby?

asked Jun 1, 2018 at 12:27

8 votes

1 answer

555 views

BTZ black hole as an identification of $AdS_3$

general-relativity gravity black-holes anti-de-sitter-spacetime

asked Aug 19, 2018 at 19:38

6 votes

0 answers

56 views

In general, do critical points of continuous phase transitions have $\beta =0$?

quantum-field-theory renormalization phase-transition critical-phenomena mean-field-theory

asked Jul 7, 2020 at 15:37

6 votes

0 answers

132 views

Target space of boundary CFT dual to a bulk string theory ($AdS_3/CFT_2$)

string-theory conformal-field-theory ads-cft instantons moduli

asked Feb 10, 2021 at 14:19

4 votes

0 answers

68 views

Is the AdS Hamiltonian the same as the CFT Hamiltonian?

hamiltonian-formalism ads-cft

asked Dec 12, 2020 at 6:39

4 votes

0 answers

51 views

Relation between bulk Hamiltonian in AdS and stress energy of CFT

gravity conformal-field-theory stress-energy-momentum-tensor ads-cft

asked Dec 13, 2020 at 13:49

4 votes

1 answer

98 views

References for larger black hole behind the horizon of a smaller black hole

general-relativity black-holes resource-recommendations event-horizon

asked Apr 13, 2021 at 14:13

3 votes

1 answer

215 views

Magnetism - Large Spin Limit

statistical-mechanics partition-function spin-models

asked Apr 28, 2018 at 11:29

3 votes

0 answers

297 views

Hubbard Model: Mean field theory and ferromagnetism

condensed-matter models ferromagnetism mean-field-theory

asked May 6, 2018 at 19:17

3 votes

1 answer

1k views

Metric for 2D de Sitter?

general-relativity differential-geometry metric-tensor de-sitter-spacetime

asked Dec 10, 2018 at 1:59

3 votes

1 answer

270 views

Constraints in general relativity

general-relativity hamiltonian-formalism stress-energy-momentum-tensor constrained-dynamics linearized-theory

asked Dec 10, 2018 at 13:57

2 votes

0 answers

47 views

Order of topological phase transitions

phase-transition topological-phase mean-field-theory

asked Feb 21, 2021 at 16:45

2 votes

1 answer

66 views

Is the massless scalar's vacuum in flat space a non-normalizable state?

quantum-mechanics quantum-field-theory hilbert-space vacuum

asked Mar 7, 2021 at 15:48

2 votes

0 answers

64 views

Question regarding the degeneracy of vacuum state in various spacetimes

quantum-field-theory general-relativity spacetime quantum-gravity vacuum

asked Dec 4, 2018 at 4:13

1 vote

1 answer

58 views

Flat space limit of the $AdS$ metric: Very basic question

special-relativity cosmological-constant anti-de-sitter-spacetime

asked Mar 11, 2021 at 10:09

1 vote

1 answer

68 views

Do the terms "basin of attraction of fixed point" and "critical surfaces" denote the same thing?

quantum-field-theory renormalization phase-transition critical-phenomena

asked Dec 15, 2020 at 10:16

1 vote

1 answer

144 views

Third law of thermodynamics - A contradiction?

thermodynamics statistical-mechanics

asked Jan 25, 2020 at 11:20

1 vote

0 answers

230 views

Regarding R-symmetry in SUSY algebra

quantum-field-theory supersymmetry

asked May 21, 2018 at 16:12

0 votes

1 answer

161 views

Regarding R-symmetry in SUSY algebra - II

quantum-field-theory supersymmetry

asked May 21, 2018 at 16:57

0 votes

1 answer

94 views

Confusion between Green function and solution of equation of motion in Witten's paper on holography and AdS

string-theory greens-functions ads-cft anti-de-sitter-spacetime

asked Mar 1, 2020 at 11:33

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20 Questions

Is it possible for a lightning strike to hit the ground if there are high rise buildings nearby?

BTZ black hole as an identification of $AdS_3$

In general, do critical points of continuous phase transitions have $\beta =0$?

Target space of boundary CFT dual to a bulk string theory ($AdS_3/CFT_2$)

Is the AdS Hamiltonian the same as the CFT Hamiltonian?

Relation between bulk Hamiltonian in AdS and stress energy of CFT

References for larger black hole behind the horizon of a smaller black hole

Magnetism - Large Spin Limit

Hubbard Model: Mean field theory and ferromagnetism

Metric for 2D de Sitter?

Constraints in general relativity

Order of topological phase transitions

Is the massless scalar's vacuum in flat space a non-normalizable state?

Question regarding the degeneracy of vacuum state in various spacetimes

Flat space limit of the $AdS$ metric: Very basic question

Do the terms "basin of attraction of fixed point" and "critical surfaces" denote the same thing?

Third law of thermodynamics - A contradiction?

Regarding R-symmetry in SUSY algebra

Regarding R-symmetry in SUSY algebra - II

Confusion between Green function and solution of equation of motion in Witten's paper on holography and AdS