How to deduce equations 3.6.15 in Polchinski's string theory book?
35298
A question about the higher-order Weyl variation for the geodesic distance
34312
Mathematically-oriented Treatment of General Relativity
126008
What is the general procedure for constructing the Penrose diagram for an arbitrary $(1+1)d$ spacetime?
61601
How does one derive these solutions to the cubic equation?
153656
What Lagrangian counterterms might be needed in a $\phi^ 6$ theory in 3D?
40683
What's wrong with the square root version of the Klein-Gordon equation?
89160
Looking for a package for Cartan formalism in Mathematica
124393
How to understand "analytical continuation" in the context of instantons?
69389
Gauge fields and strings: Loop equations
21917
Mathematical Prerequisites for QFT
3201
Landau & Lifshitz's Approach (contour method) on the WKB connection formulas
92427
Geodesic equation from the proper time integral
127431
What is the equation for a string fixed at both ends without simplifying assumptions?
16644
Why does cancellation of dots $\frac{\partial \dot{\mathbf{r}}_i}{\partial \dot{q}_j} = \frac{\partial \mathbf{r}_i}{\partial q_j}$ work?
51644
Differential Equations for Physicists
103910
Massless string Paradox
32113
Tension on a massless string