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Wakabaloola
  • Member for 7 years, 3 months
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260 votes
11 answers
62k views

Don't heavier objects actually fall faster because they exert their own gravity?

  • 2,838
45 votes
0 answers
2k views

$\operatorname{O}(N)$ sigma model at large $N$

  • 805
35 votes
2 answers
898 views

Can we get complete non-perturbative information of the interacting system by computing perturbation to all orders?

  • 1,979
23 votes
1 answer
3k views

What does the identity operator look like in Quantum Field Theory?

  • 20.8k
23 votes
2 answers
9k views

Gaussian integral with imaginary coefficients and Wick rotation

22 votes
1 answer
3k views

Systematic way to draw all inequivalent Feynman diagrams

  • 405
22 votes
1 answer
1k views

Derivation of KLT relations

20 votes
2 answers
3k views

Problems while Wick rotating the path integral

  • 5,759
20 votes
1 answer
832 views

Conformal Field Theory in 1+1d Spontaneously Breaking Conformal Symmetry

16 votes
2 answers
555 views

Compact or non-compact boson from bosonization?

  • 2,404
13 votes
2 answers
659 views

When can we handle a quantum field like a classical field?

  • 3,501
11 votes
1 answer
544 views

2-pt String Sphere Amplitudes

  • 1,783
11 votes
3 answers
998 views

Conformal symmetry, Weyl symmetry, and a traceless energy-momentum tensor

  • 96k
11 votes
1 answer
526 views

Why do OPEs have a finite radius of converges in CFTs, but not necessarily in QFTs?

10 votes
2 answers
291 views

How to calculate a TQFT Gaussian path integral from Seiberg's "fun with free field theory"?

10 votes
4 answers
5k views

What does it mean that space-time is emergent?

  • 3,611
10 votes
1 answer
300 views

Submanifolds of constant entanglement entropy

  • 2,649
9 votes
2 answers
2k views

Propagator Correction in $\phi^4$ theory - why doesn't this secular growth break perturbation theory?

9 votes
2 answers
727 views

Can observations of entangled particles affect their unobserved counterparts?

8 votes
2 answers
540 views

Polchinski String Theory p 105 Eq (3.6.18) Weyl Transformation of the Massless Vertex Operator

  • 2,854
8 votes
1 answer
1k views

Transformation of the energy-momentum tensor under conformal transformations

  • 1,513
8 votes
0 answers
136 views

Low-energy effective actions in string theory: agreement between beta-function vs. scattering-based derivations?

8 votes
1 answer
623 views

Graviton Emission from D-Branes

8 votes
4 answers
610 views

Ladder operator identity for $\langle n | (a+a^\dagger)^k | m \rangle$

  • 918
8 votes
3 answers
769 views

Question about manifolds and coordinate transformations

  • 2,741
7 votes
1 answer
1k views

Point splitting regularization for polynomials of operators

  • 284
7 votes
1 answer
1k views

How are string vibration modes related to particle identity?

7 votes
1 answer
618 views

Path Integral of Chern-Simons Theory

7 votes
1 answer
327 views

2D global conformal transformations and the $z= \frac1w$ argument

  • 1,884
7 votes
3 answers
842 views

Srednicki QFT Chapter 29: Feynman diagrams for calculating the effective action