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rainman's user avatar
rainman
  • Member for 11 years
  • Last seen more than a week ago
  • New Mexico, United States
3 votes

How do I evalute $\langle n|x^2 |n\rangle$ using the annihilation and creation operators?

2 votes

Introduction to string theory

2 votes

Parity and the Dipole Operator for a Two-Level System

1 vote

Informal book on Classical Mechanics

1 vote

What is the third component of the isospin, $I_3$?

1 vote

$m$ in Klein-Gordon Equation

0 votes

Eigenkets in Interaction Picture

0 votes

Who is said to do Work, me or the body?

0 votes

Relation between Green’s functions and connected Green’s functions

0 votes

Delta Function Identity in Peskin & Schroeder

-1 votes

Relation between electric field and potential when we reverse $\vec{r}$

-2 votes

Relation between symmetry factors