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location Italy
age 31
visits member for 4 years, 9 months
seen 7 hours ago

If you are (a) angry and (b) reading this. Then you taking yourself too damn seriously. Chill out!


6h
comment Physics-based derivation of the formula for entropy
To my taste, the beginning of Landau-Lifshitz "Statistical Mechanics Vol.1" gives quite thorough and clear derivation of it.
Aug
18
awarded  Famous Question
Aug
3
awarded  Good Answer
Jul
28
awarded  Famous Question
Jul
27
comment Why group velocity represents energy or information transmission? What relation between phase velocity and special relativity
@AdrianMay I wouldn't say that the argument is circular. The argument is just opposite of what one expects: one doesn't derive causality from $\omega(k)$ -- one constraints $\omega(k)$ with the causality requirement.
Jul
24
awarded  Good Question
Jun
28
awarded  Good Answer
Jun
16
comment Is there a natural (suitable) definition for functional derivative in Curved space time
@Prag1 First of all -- are you sure about you derivative? The $\sqrt{g}$ means something more complex, isn't it?
Jun
15
answered Is there a natural (suitable) definition for functional derivative in Curved space time
Apr
8
comment Can universe or anything be simulated with absolute accuracy?
@LifeH2O Yes if you are talking about the total wavefuncion of your your system.
Apr
8
answered Can universe or anything be simulated with absolute accuracy?
Apr
1
comment Is there a mistake in a QFT textbook?
Looks like you are right -- dimensions do not match up...
Mar
18
awarded  Good Question
Mar
14
awarded  Popular Question
Mar
8
awarded  Enlightened
Mar
8
awarded  Nice Answer
Feb
10
awarded  quantum-mechanics
Feb
9
comment What is the difference between a bit and a qubit?
@MattCube, can I ask you... Do you have any familiarity at all with complex numbers? $\qquad\qquad\qquad$ How much is $(5+i3)\cdot 3e^{i\frac\pi4}$ ?
Feb
9
answered What is the difference between a bit and a qubit?
Feb
6
answered What are the effects of increased mass on persons traveling at near light speed?