Atanu Nath

M.Sc

Tata Institute of Fundamental Research · Department of High Energy Physics

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Topics (10) View all

Theoretical Physics ×

65 Questions

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Mathematical Physics ×

26 Questions

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elementary particle physics ×

12 Questions

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High Energy Physics ×

22 Questions

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Accelerator Physics ×

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Strongly Correlated Systems ×

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Quantum Field Theory ×

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Gauge Theory ×

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Questions and Answers (2) View all

Answer added in Quantum Mechanics
8 Is algebra of Pauli matrices invariant under transformation?
By Masoud Shokri · University of Mazandaran

Atanu Nath · Tata Institute of Fundamental Research

Under what kind of transformation ? If it is similarity transformation, then yes it is invariant and so all Lie-Algebra, any non-singular square matri... [more]

Under what kind of transformation ? If it is similarity transformation, then yes it is invariant and so all Lie-Algebra, any non-singular square matrix "S" of the same dimension as that of the matrices involved (say A_i) in the algebra can keep it invariant if we transform like this : $ A^{\prime} = S^{-1} A_i S $, then the primed matrices will satisfy the same algebra as the unprimed A's once did.

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Answer added in Quantum Mechanics
16 How does a (non-material) angular-momentum-wave function create a magnetic moment?
By Michael Huber

Atanu Nath · Tata Institute of Fundamental Research

Kai Fauth's answer is complete, @questioner: but I needed to say that I disagree that "wavefunction" is a purely mathematical quantity ! One that we ... [more]

Kai Fauth's answer is complete, @questioner: but I needed to say that I disagree that "wavefunction" is a purely mathematical quantity ! One that we cannot directly measure is not non-physical, we can get an estimate of the probability density and that comes from the wavefunction, you can say its not measurable but its not "just mathematical artifact", because then you can also say "color charge" of the quarks are non-physical too ! A state with non-zero angular momentum can give you a non-zero angular momentum expectation value and the state do have a charge, so a magnetic moment do exist why not interact with external field ?

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Following (15) See all

Kapil Narwal

Maharshi Dayanand University
Rahul Karale

University of Pune
Pintu Mandal

Indian Association for the Cultivation of Science
Bharat Raj Singh

School of Management Sciences, Lucknow
Bappaditya Chandra

Tata Institute of Fundamental Research
Arun K.M.

Vellore Institute of Technology
Vijayakumar Ramamurthy

National Aerospace organization
Biplab Bhattacherjee

S.N. Bose National Centre for Basic Sciences
Preethanuj Preethalayam

National Institute for Interdisciplinary Science and Technology
Debmalya Mukhopadhyay

S.N. Bose National Centre for Basic Sciences