User Luqman Saleem

6 votes

2 answers

465 views

Resource recommendation: Tensor Networks

asked Dec 28, 2018 at 15:18

5 votes

2 answers

2k views

Hubbard model diagonalization in $k$-space

quantum-mechanics condensed-matter computational-physics hamiltonian lattice-model

asked Aug 25, 2017 at 9:19

5 votes

1 answer

319 views

What are $U(n)$ or $\mathbb{Z}_2$ quantum spin liquids?

condensed-matter terminology topological-order topological-phase spin-models

asked Sep 13, 2019 at 15:54

4 votes

1 answer

220 views

Making connection of first quantization to second quantization, (quantum field theory)

quantum-mechanics quantum-field-theory hilbert-space operators second-quantization

asked Jan 16, 2020 at 22:25

4 votes

0 answers

828 views

Hartree-Fock decoupling of Hubbard model

quantum-mechanics condensed-matter approximations second-quantization quantum-chemistry

asked Nov 13, 2017 at 23:13

3 votes

1 answer

819 views

Diagonalization of Hubbard model for spinless fermions in 1D $k$-space

quantum-mechanics condensed-matter computational-physics lattice-model

asked Aug 6, 2017 at 18:14

3 votes

0 answers

281 views

Charge conjugation operator in second quantization

quantum-mechanics quantum-field-theory antimatter second-quantization charge-conjugation

asked Oct 17, 2017 at 18:40

3 votes

2 answers

1k views

How can I explicitly express the Ising Hamiltonian in matrix form?

condensed-matter quantum-spin computational-physics ising-model spin-chains

asked Dec 29, 2018 at 21:41

3 votes

1 answer

661 views

How presence of metastable state ensure that there is first order phase transition?

quantum-mechanics thermodynamics statistical-mechanics phase-transition

asked Jul 22, 2018 at 21:31

3 votes

0 answers

162 views

What is the correct way to perform numerical integration over Brillouin zone?

condensed-matter solid-state-physics computational-physics simulations

asked Nov 2, 2020 at 20:10

3 votes

0 answers

43 views

Relation between many-body system's single-particle retarded Green' function and Propagator for single particle wavefunction

quantum-field-theory condensed-matter solid-state-physics greens-functions propagator

asked Feb 18, 2021 at 11:04

3 votes

0 answers

50 views

Different ways to defining Fourier transform of a lattice model

solid-state-physics fourier-transform crystals lattice-model

asked Mar 28, 2021 at 20:46

2 votes

1 answer

189 views

Projection operator in second quantization

quantum-mechanics quantum-field-theory operators solid-state-physics field-theory

asked Apr 24, 2021 at 0:44

2 votes

1 answer

104 views

What does intrinsic and extrinsic contribution to Hall effect mean?

condensed-matter solid-state-physics terminology semiconductor-physics thermal-conductivity

asked Nov 10, 2020 at 0:50

2 votes

0 answers

20 views

Resource recommendation for thermal transportation in solids

statistical-mechanics condensed-matter solid-state-physics resource-recommendations

asked Sep 10, 2020 at 22:40

2 votes

1 answer

76 views

Physical meaning of phenomenological equations for transport coefficients

quantum-mechanics quantum-field-theory operators solid-state-physics thermal-conductivity

asked Nov 16, 2020 at 22:27

2 votes

1 answer

66 views

Hamiltonian density of a spin Hamiltonian

hamiltonian-formalism second-quantization spin-models tight-binding

asked Sep 13, 2021 at 12:58

2 votes

1 answer

90 views

How does projector Monte Carlo method work?

statistical-mechanics condensed-matter computational-physics many-body

asked Aug 27, 2018 at 14:37

2 votes

1 answer

149 views

Can we numerically find ground-state of a 1D tight binding Hamiltonain with odd sites at half filling?

thermodynamics statistical-mechanics condensed-matter solid-state-physics lattice-model

asked Mar 28, 2019 at 15:09

2 votes

1 answer

260 views

Resource recommendation for spintronics

solid-state-physics quantum-spin resource-recommendations semiconductor-physics electronics

asked May 10, 2019 at 12:58

2 votes

1 answer

376 views

Physical meaning of topological invariant

condensed-matter phase-transition topological-insulators quantum-hall-effect

asked Dec 10, 2017 at 13:29

2 votes

1 answer

3k views

What is "quantum gas"?

quantum-mechanics condensed-matter quantum-information bose-einstein-condensate

asked May 30, 2018 at 21:26

2 votes

1 answer

83 views

Calculating thermal average of an observable in quantum mechanics [closed]

quantum-mechanics statistical-mechanics condensed-matter solid-state-physics tight-binding

asked Apr 5 at 13:27

1 vote

0 answers

27 views

Linear response theory of spin Seebeck effect

quantum-mechanics statistical-mechanics condensed-matter field-theory spin-statistics

asked Jan 2, 2020 at 19:54

1 vote

0 answers

59 views

How to prove this relation (algebra: containing non-interacting Green function)?

solid-state-physics mathematics calculus approximations

asked Jan 10 at 17:03

1 vote

1 answer

56 views

Is first-order perturbation always equal to Hartree-Fock approximation?

quantum-mechanics terminology perturbation-theory

asked Oct 7, 2021 at 0:36

1 vote

1 answer

111 views

Kubo identity (electrical conductivity) integration

quantum-mechanics condensed-matter solid-state-physics many-body correlation-functions

asked Dec 15, 2021 at 21:01

1 vote

1 answer

60 views

Evaluating electric conductivity using Kubo formula. Scalar potential vs vector potential

quantum-mechanics quantum-field-theory condensed-matter solid-state-physics semiconductor-physics

asked Apr 15 at 0:35

1 vote

0 answers

37 views

Why is the perturbation term taken as current density times magnetic vector potential in Hamiltonian?

quantum-mechanics quantum-field-theory condensed-matter solid-state-physics

asked Jun 2 at 12:27

1 vote

0 answers

112 views

Reference for Bethe Ansatz solution of 1D spinless Hubbard model

quantum-mechanics condensed-matter resource-recommendations integrable-systems spin-chains

asked Feb 20, 2018 at 13:47

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86 Questions

Resource recommendation: Tensor Networks

Hubbard model diagonalization in $k$-space

What are $U(n)$ or $\mathbb{Z}_2$ quantum spin liquids?

Making connection of first quantization to second quantization, (quantum field theory)

Hartree-Fock decoupling of Hubbard model

Diagonalization of Hubbard model for spinless fermions in 1D $k$-space

Charge conjugation operator in second quantization

How can I explicitly express the Ising Hamiltonian in matrix form?

How presence of metastable state ensure that there is first order phase transition?

What is the correct way to perform numerical integration over Brillouin zone?

Relation between many-body system's single-particle retarded Green' function and Propagator for single particle wavefunction

Different ways to defining Fourier transform of a lattice model

Projection operator in second quantization

What does intrinsic and extrinsic contribution to Hall effect mean?

Resource recommendation for thermal transportation in solids

Physical meaning of phenomenological equations for transport coefficients

Hamiltonian density of a spin Hamiltonian

How does projector Monte Carlo method work?

Can we numerically find ground-state of a 1D tight binding Hamiltonain with odd sites at half filling?

Resource recommendation for spintronics

Physical meaning of topological invariant

What is "quantum gas"?

Calculating thermal average of an observable in quantum mechanics [closed]

Linear response theory of spin Seebeck effect

How to prove this relation (algebra: containing non-interacting Green function)?

Is first-order perturbation always equal to Hartree-Fock approximation?

Kubo identity (electrical conductivity) integration

Evaluating electric conductivity using Kubo formula. Scalar potential vs vector potential

Why is the perturbation term taken as current density times magnetic vector potential in Hamiltonian?

Reference for Bethe Ansatz solution of 1D spinless Hubbard model