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56 votes

Why the galaxies form 2D planes (or spiral-like) instead of 3D balls (or spherical-like)?

gravity angular-momentum astrophysics galaxies star-clusters asked Jan 15, 2014 at 19:39
physics.stackexchange.com

41 votes

The Origin(s) of Modular and Moduli

ag.algebraic-geometry nt.number-theory at.algebraic-topology ct.category-theory topological-modular-form asked May 12, 2018 at 5:22
mathoverflow.net

34 votes

Zero modes ~ zero eigenvalue modes ~ zero energy modes?

quantum-field-theory string-theory research-level topological-field-theory topological-order asked Aug 13, 2013 at 15:23
physics.stackexchange.com

30 votes

How to travel to this tower with a gorgeous view toward Mount Fuji?

trains japan identify-this tokyo mount-fuji asked Mar 10, 2021 at 22:14
travel.stackexchange.com

26 votes

How to convert the $\LaTeX$ format to Mathematica input?

latex conversion input asked Dec 6, 2016 at 1:08
mathematica.stackexchange.com

23 votes

Subtlety of analytic continuation - Euclidean / Minkowski path integral

string-theory path-integral complex-numbers wick-rotation analyticity asked Nov 6, 2013 at 2:38
physics.stackexchange.com

21 votes

Phase Structure of (Quantum) Gauge Theory

quantum-field-theory gauge-theory topological-field-theory topological-order phase-diagram asked Mar 8, 2014 at 7:27
physics.stackexchange.com

21 votes

Strong interacting v.s. Strong Coupling v.s. Strong Correlated

particle-physics condensed-matter research-level fermi-liquids strong-correlated asked Jun 7, 2014 at 3:39
physics.stackexchange.com

21 votes

Duality between Euclidean time and finite temperature, QFT and quantum gravity, and AdS/CFT

quantum-field-theory gravity string-theory statistical-mechanics research-level asked Jun 21, 2014 at 19:13
physics.stackexchange.com

20 votes

Do all massless particles (e.g. photon, graviton, gluon) necessarily have the same speed $c$?

quantum-field-theory special-relativity photons speed-of-light mass asked Dec 17, 2013 at 5:22
physics.stackexchange.com

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Top Answers
21
Mathematical research published in the form of poems
mathoverflow.net

17
What is a $p_x + i p_y$ superconductor? Relation to topological superconductors
physics.stackexchange.com

14
Is there a difference between 愿意 and 肯?
chinese.stackexchange.com

12
What is the difference between Chiral anomaly, ABJ anomaly, and Axial anomaly?
physics.stackexchange.com

10
Are the Maxwell's equations enough to derive the law of Coulomb?
physics.stackexchange.com

9
Anomalies for not-on-site discrete gauge symmetries
physics.stackexchange.com

9
Chinese equivalent of "I can honestly say..."
chinese.stackexchange.com

8
Occurrences of (co)homology in other disciplines and/or nature
mathoverflow.net

8
Why is conformal invariance only possible for massless theories?
mathoverflow.net

7
Explicit 2-Cocycles of G=Z2×Z2xZ2 over U(1)
mathoverflow.net

6
Is there any theory for origination of charge?
physics.stackexchange.com

6
Why do we require the generators of $\mathrm{SU(N)}$ gauge theories to be $N \times N$ matrices?
physics.stackexchange.com

6
What is charge?
physics.stackexchange.com

6
Explicit 3-cocycle of a cyclic group
mathoverflow.net

6
TQFT characterization of braiding statistics
mathoverflow.net

6
A reading list for topological quantum field theory?
mathoverflow.net

5
Quantum Anomalies for Bosons
physics.stackexchange.com

5
Accidental, unplanned breakthroughs in Mathematics
mathoverflow.net

5
3-cocycle representatives for the dihedral group $D_{2n}$?
mathoverflow.net

5
Orbit and stabilizer of the representation of multiplication decomposition of $U(3)$
math.stackexchange.com

5
Learning roadmap to TQFT from a mathematics perspective
mathoverflow.net

5
What is the difference between 魂 and 魄?
chinese.stackexchange.com