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visits member for 3 years, 5 months
seen Dec 22 at 14:39

Dec
15
asked How does Dirac define the representative of $\{\langle\phi\frac{d}{dq}\}\psi\rangle = \langle\phi\{\frac{d}{dq}\psi\rangle\}$
Nov
25
asked EPR Paradox resolution: the spin is fixed at creation but its measurement isn't?
Nov
24
asked Does the total energy in an electromagnetic field depend on the acceleration of the sources?
Oct
27
asked How to show that $(\xi\eta-\eta\xi)|A\rangle = 0$?
Oct
24
asked How does independence of the basic bras affect the choice of numbers used to represent a ket?
Oct
12
asked Should the eigenkets be weighted in $|P\rangle = \sum\limits_{r}|\xi^r\rangle$?
Oct
5
asked Why does Dirac write $\langle\xi'|\overline{f(\xi)} = \overline f(\xi ')\langle\xi'|$?
Sep
24
asked How does Dirac conclude that $X_r(c_r)$ cannot vanish?
Sep
22
asked How does Dirac form this conjugate imaginary equation?
Sep
18
asked How is it shown that the composition of two real operators is generally not real?
Sep
2
asked How does Dirac show that $\langle B|\bar{\bar{\alpha}}|P\rangle\;=\; \overline{\langle P|{\bar{\alpha}}|B\rangle}\;=\; \langle B|{\alpha}|P\rangle$?
Aug
24
asked Is there a “forwards” and “backwards” in one dimension?
Aug
19
asked Why should multiplication of a ket vector by a complex number change only its “direction”?
Jun
12
asked Why isn't there a limit for a Euclidean rotation, as for a Minkowski rotation?
Apr
30
answered Can the equivalence principle be shown to follow from special relativity?
Mar
17
asked What experiments compete with BICEP 2, and when are their results expected?
Feb
6
answered What's the interpretation of Feynman's picture proof of Noether's Theorem?
Sep
24
asked Why does a stationary force affect the conservation of momentum, but not the conservation of energy?
Jul
8
answered Why do we still need to think of gravity as a force?
Mar
16
asked Must the Lagrangian always be known for the Euler-Lagrange equations to be of any use?