Question

What do we lose by going from self adjoint to essentially self adjoint

score 70 · Answer 1 · 2020-12-22 21:28:05

70

Views

What do we lose by going from self adjoint to essentially self adjoint

Published on 22 Dec 2020 - 21:28

score 105 · Answer 2 · 2020-12-23 13:51:37

105

Views

Proof that $\left \langle 0\mid \hat{S}\mid 0 \right \rangle = e^{\sum (\text{all connected vacuum diagrams})}$

Published on 23 Dec 2020 - 13:51

score 354 · Answer 3 · 2026-04-02 20:13:43

354

Views

How to compute the trace of an exponential raised to a power of bras and kets? (bra-ket notation)

Published on 02 Apr 2026 - 20:13

score 235 · Answer 4 · 2026-03-26 21:12:41

235

Views

What is the integrand of a path integral?

Published on 26 Mar 2026 - 21:12

score 4.4k · Answer 5 · 2021-01-04 05:39:17

4.4k

Views

If the multiplication of two operators is hermitian, then will they commute?

Published on 04 Jan 2021 - 5:39

score 1k · Answer 6 · 2021-01-07 06:49:23

1k

Views

Associated Legendre Polynomials from the Schrodinger Equation for the Hydrogen Atom

Published on 07 Jan 2021 - 6:49

score 13 · Answer 7 · 2026-02-28 04:49:59

13

Views

How to get $E$ (Eigenvalue) or $E_n$ from this transcendental complex equation?

Published on 28 Feb 2026 - 4:49

score 51 · Answer 8 · 2021-01-09 23:40:23

51

Views

On the Stone Von Neumann theorem: Why is this a (non orthogonal basis of $L^2(\mathbb R^n)$?

Published on 09 Jan 2021 - 23:40

score 317 · Answer 9 · 2021-01-11 16:17:48

317

Views

Understanding a proof that a Hermitian matrix has an orthonormal basis whose diagonal contains its eigenvalues

Published on 11 Jan 2021 - 16:17

score 250 · Answer 10 · 2026-03-27 08:56:42

250

Views

Use integration by parts in cylindrical coordinates to turn these second derivatives into first derivatives

Published on 27 Mar 2026 - 8:56

score 525 · Answer 11 · 2021-01-12 19:08:58

525

Views

Representation of Dirac's delta function over a domain with periodic boundary condition

Published on 12 Jan 2021 - 19:08

score 84 · Answer 12 · 2021-01-16 18:56:05

84

Views

What is wrong with this procedure-writing Angular momentum operator in spherical coordinates

Published on 16 Jan 2021 - 18:56

score 215 · Answer 13 · 2026-04-01 16:19:28

215

Views

Proving an identity for the quantum angular momentum operator

Published on 01 Apr 2026 - 16:19

score 146 · Answer 14 · 2026-03-29 17:31:13

146

Views

Change of variables during differentiation

Published on 29 Mar 2026 - 17:31

score 106 · Answer 15 · 2021-01-22 22:00:34

106

Views

Understanding a Hermitian Matrix Derivation in a Mechanics Spring Setting

Published on 22 Jan 2021 - 22:00

List Question

What do we lose by going from self adjoint to essentially self adjoint

Proof that $\left \langle 0\mid \hat{S}\mid 0 \right \rangle = e^{\sum (\text{all connected vacuum diagrams})}$

How to compute the trace of an exponential raised to a power of bras and kets? (bra-ket notation)

What is the integrand of a path integral?

If the multiplication of two operators is hermitian, then will they commute?

Associated Legendre Polynomials from the Schrodinger Equation for the Hydrogen Atom

How to get $E$ (Eigenvalue) or $E_n$ from this transcendental complex equation?

On the Stone Von Neumann theorem: Why is this a (non orthogonal basis of $L^2(\mathbb R^n)$?

Understanding a proof that a Hermitian matrix has an orthonormal basis whose diagonal contains its eigenvalues

Use integration by parts in cylindrical coordinates to turn these second derivatives into first derivatives

Representation of Dirac's delta function over a domain with periodic boundary condition

What is wrong with this procedure-writing Angular momentum operator in spherical coordinates

Proving an identity for the quantum angular momentum operator

Change of variables during differentiation

Understanding a Hermitian Matrix Derivation in a Mechanics Spring Setting

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