Whelp

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I am an engineer learning physics in my spare time. My current focus is quantum field theory and the Standard Model.

	838 reputation	bio	website		visits	member for	2 years, 4 months
211 badges		location			seen	Apr 2 at 10:18

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May 2	awarded	Nice Question
Apr 20	awarded	Popular Question
Apr 17	awarded	Popular Question
Jan 24	awarded	Yearling
Jan 11	awarded	Popular Question
Nov 27	accepted	What is the expectation value of the number operator when the vacuum has a VEV?
Nov 27	asked	What is the expectation value of the number operator when the vacuum has a VEV?
Nov 14	comment	Why is the axial current said to create particles? @Nick : In (2.42) the operator is the field operator. I am used to think of $\phi(x)$ acting on the vacuum as creating a particle at $x$. But I was suprised to see it attached to the current operator. Is this language valid whenever an operator has a non-zero matrix element between the vacuum and a particle state?
Nov 14	asked	Why is the axial current said to create particles?
Nov 9	accepted	Why is mass renormalization insufficient to explain electron mass?
Nov 9	asked	Why is mass renormalization insufficient to explain electron mass?
Oct 2	accepted	Interpretation of field operator
Oct 1	accepted	How does a supersymmetry transformatio relates bosons to fermions?
Oct 1	asked	How does a supersymmetry transformatio relates bosons to fermions?
Sep 24	comment	Interpretation of field operator Thanks, this is very helpful. The origin of my question is that I've often seen in textbooks correlation functions of the type $<0\|T\varphi (x_1)\varphi (x_2)\|0>$ are often described as a process where a particle is created at $x_2$, travels to $x_1$, and is then annihilated there.
Sep 24	asked	Interpretation of field operator
Sep 19	accepted	Equivalence of classical and quantized equation of motion for a free field
Sep 18	revised	Equivalence of classical and quantized equation of motion for a free field added 920 characters in body
Sep 18	asked	Equivalence of classical and quantized equation of motion for a free field
Sep 18	accepted	Relativistic contraction for a wave packet and uncertainty on momentum