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Density operators and quantum operators

quantum-mechanics homework-and-exercises quantum-information hilbert-space

modified 11 mins ago Norbert Schuch 5,216

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How to compute partial trace of $U ( \rho_A \otimes \rho_B) U^+$?

quantum-mechanics homework-and-exercises quantum-information

modified 23 mins ago Norbert Schuch 5,216

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Use Cartan subalgebra in spinor representation to find weights of vector representation

homework-and-exercises group-theory lie-algebra representation-theory clifford-algebra

answered 24 mins ago LOQ 53

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Question on the Proof of Hohenberg -Kohn Theorem

quantum-mechanics condensed-matter density-functional-theory

modified 33 mins ago AMS 1,066

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Derivation of Euler-Lagrange equations from Hamilton's and D'Alembert's principle

classical-mechanics lagrangian-formalism variational-principle constrained-dynamics

modified 33 mins ago Qmechanic♦ 66.1k

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Hermitian conjugate of a billinear $\overline{\psi_1}\psi_2^c$

quantum-field-theory particle-physics neutrinos majorana-fermions charge-conjugation

modified 39 mins ago SRS 4,250

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Discharging capacitor

electric-circuits electrical-resistance capacitance homework-and-exercises

modified 39 mins ago Community♦ 1

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Why does $\hat n \times (\vec E_1 - \vec E_2) =0 $ imply that the tangential electric field components are equal?

electromagnetism vectors boundary-conditions

modified 1 hour ago jens_bo 208

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Derivation of Universal Variables

newtonian-mechanics newtonian-gravity orbital-motion

modified 1 hour ago Community♦ 1

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What's relation between path integral and Dyson series?

quantum-mechanics operators path-integral time-evolution

modified 1 hour ago Qmechanic♦ 66.1k

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Does air resistance increase the speed of a falling object?

newtonian-mechanics gravity newtonian-gravity drag

answered 1 hour ago Apoorv Potnis 82

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Stress along arbitrary surface

homework-and-exercises forces stress-strain

modified 2 hours ago DilithiumMatrix 9,410

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How would pressure in a blob of water not subjected to any force field behave?

classical-mechanics fluid-dynamics pressure water

answered 2 hours ago Zero 1,466

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How to get image current in magnetostatics? (magnetic slab)

electromagnetism magnetic-fields magnetostatics

modified 2 hours ago Community♦ 1

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Density operators and quantum operators

How to compute partial trace of $U ( \rho_A \otimes \rho_B) U^+$?

Use Cartan subalgebra in spinor representation to find weights of vector representation

Question on the Proof of Hohenberg -Kohn Theorem

Derivation of Euler-Lagrange equations from Hamilton's and D'Alembert's principle

Hermitian conjugate of a billinear $\overline{\psi_1}\psi_2^c$

Discharging capacitor

Why does $\hat n \times (\vec E_1 - \vec E_2) =0 $ imply that the tangential electric field components are equal?

Derivation of Universal Variables

What's relation between path integral and Dyson series?

Does air resistance increase the speed of a falling object?

Stress along arbitrary surface

How would pressure in a blob of water not subjected to any force field behave?

How to get image current in magnetostatics? (magnetic slab)

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