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Mar
30
awarded  Notable Question
Mar
13
awarded  Disciplined
Mar
10
awarded  Yearling
Nov
24
comment Heuristics behind Dirac delta function in Master equation for probability?
Excellent! But for completing your answer, how would you derive the differential equation intuitively?
Nov
13
revised Heuristics behind Dirac delta function in Master equation for probability?
added 42 characters in body
Nov
6
asked Heuristics behind Dirac delta function in Master equation for probability?
Oct
21
accepted Prove that if $\hat H | a_n\rangle=a_n|a_n\rangle$, then $f(\hat H)| a_n\rangle=f(a_n)|a_n\rangle$
Sep
5
comment Can a baseball travel through the Sun?
@Alex It seems that you want the conditions under a ball could pass through the sun. I suggest to edit your question. Also, your question is quantifiable, you could make a short calculation to get the answer.
Sep
5
answered Twins Paradox - Does ageing depend on motion?
Sep
4
comment Wavefunctions in different Hilbert spaces
@Timaeus is right, there aren't lots of different Hilbert spaces, but there are lots of different basis, say $\{|x\rangle\}$ or $\{|p\rangle\}$. And BTW, $\psi(x,y):=\langle x, y |\psi \rangle$.
Sep
4
comment Wavefunctions in different Hilbert spaces
@march Actually, the correct expression would be writing $| \psi \rangle$ at the left hand side (without the $x$ in $\psi(x)$, because $| \psi \rangle$ does not depend on x, but when you project at the position space you have: $\psi(x):=\langle x| \psi \rangle$).
Sep
4
asked Prove that if $\hat H | a_n\rangle=a_n|a_n\rangle$, then $f(\hat H)| a_n\rangle=f(a_n)|a_n\rangle$
Jun
18
awarded  Notable Question
May
12
awarded  Popular Question
May
11
awarded  Popular Question
Mar
17
awarded  Popular Question
Dec
8
awarded  Popular Question
Dec
1
comment Are there diffrent understandings of dimensions?
As you said we certainly live in 3 SPATIAL dimensions. And using only these 3 spatial dimensions and time we can describe phenomena involving a set of physical properties likes mass, charge, electric/magnetic moment, current, refraction index, etc.
Nov
25
asked Examples of systems with linear response behavior
Nov
4
awarded  Yearling