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Deriving the wave equation using small perturbations
- JD_PM
- · Replies 1 ·
Second-order correction to energy in degenerate purturbation
- Haorong Wu
- · Replies 3 ·
Ideal gas in a cylindrical container
- CptXray
- · Replies 4 ·
Magnetic flux density of a relativistic electron
- The forgetful one
- · Replies 1 ·
Number of Angular Momentum States (3 particles)
- schlegelii
- · Replies 32 ·
Deriving the gravitational binding energy of the cluster
- Arman777
- · Replies 6 ·
What is the effect on the Berry phase?
- jeon3133
- · Replies 3 ·
Spin Orbit Coupling + Magnetic Field
- t0pquark
- · Replies 5 ·
Magnetic field intensity, flux density and magnetization of coax cable
- AndrewC
- · Replies 1 ·
Deriving the Equation of Motion out of the Action
- JD_PM
- · Replies 15 ·
Response function susceptibility χ_HA derivation
- Diracobama2181
- · Replies 1 ·
Stress tensor for a parallel plate capacitor
- patrykh18
- · Replies 14 ·
Calculating the mass of the neutrino for a relativistic case
- Arman777
- · Replies 8 ·
Degeneracy of hydrogen with infinite potential wall on one side
- Silicon-Based
- · Replies 1 ·
Finding the velocity of an emitted particle from a decay
- HarryO
- · Replies 3 ·
Necessary KE of particles to create a resulting particle in a collision
- HarryO
- · Replies 2 ·
Find the probability of a particle in the left half of an Infinite Square well
- Moolisa
- · Replies 3 ·
How to Calculate Invariant Mass for Negligible Particle Mass?
- tnibbz
- · Replies 9 ·
What is the value of the second term in the commutator for an N particle system?
- B4cklfip
- · Replies 3 ·
Change in Mass of Hurricane Harvey's Rain
- Game Maker
- · Replies 9 ·
Gamma Function Q from Mary Boas 2nd ed (ch11)
- weak_phys
- · Replies 3 ·
Scattering amplitude in scattering from a delta function
- joaosantossilva
- · Replies 1 ·
How to Derive the Density Difference in Van Der Waals Phase Transition?
- Diracobama2181
- · Replies 6 ·
Characteristic Impedance of a coaxial cable
- EEuser
- · Replies 1 ·
Do Lx and Ly have a same eigenstate?
- Haorong Wu
- · Replies 5 ·
General solution of the spherical wave equation
- ContagiousKnowledge
- · Replies 20 ·
Relationship between Heat Capacity Cv for Different Models
- A Story of a Student
- · Replies 14 ·
Invariance of a spin singlet under rotation
- Silicon-Based
- · Replies 6 ·
Does $$S_1^x$$ commute with $$S^2$$?
- Diracobama2181
- · Replies 1 ·
Normal modes of a rectangular elastic membrane
- ContagiousKnowledge
- · Replies 9 ·
Find the electric dipole moment for a water molecule
- Elder1994
- · Replies 1 ·
How Can We Generalize the Lorentz Transformation to Two Dimensions?
- unified
- · Replies 9 ·
Show that the Hamiltonian is Hermitian for a particle in 1D
- Moolisa
- · Replies 4 ·
Quantum tunneling: T(E) graph for a potential barrier diagram
- Theodore0101
- · Replies 3 ·
Vector potential of current flowing to a point from all directions
- RedDeer44
- · Replies 3 ·
Is the Integral ∫x|∅(x)|²(1+|x|)ⁿdx Finite in Quantum Mechanics?
- TTT
- · Replies 9 ·
Show that the position operator does not preserve H
- Moolisa
- · Replies 6 ·
Finding Cartan Subalgebras for Matrix Algebras
- leo.
- · Replies 1 ·
Why Does My Calculation Have an Extra Factor of 2?
- RealKiller69
- · Replies 2 ·
Energy of singlet state and triplet state
- insanul
- · Replies 1 ·
Find psi(x,t) when psi(x,0)= Ae^(-x^2/a^2) and A, a are real constants
- Moolisa
- · Replies 2 ·
Is the Ion Bound with this Energy Minimization?
- schlegelii
- · Replies 1 ·
Operator that commutes with the Hamiltonian
- Riemann9471
- · Replies 3 ·
Anti-reflective coating with refractive index √n on glass
- ContagiousKnowledge
- · Replies 3 ·
How Do I Solve These Scattering Cross Section Problems?
- Diracobama2181
- · Replies 5 ·
(Physicist version of) Taylor expansions
- Jason Bennett
- · Replies 2 ·
Electromagnetic plane waves from a current sheet
- Luqman Saleem
- · Replies 1 ·
Why doesn't a real Infinite Redshift Limit occur at R+ for Kerr BHs?
- JTorn
- · Replies 1 ·
Find the potential V(r, φ) inside and outside the cylinder
- nickap34
- · Replies 5 ·
How Does Eddington Luminosity Limit Black Hole Mass Accretion Rates?
- fishlens
- · Replies 1 ·
Dyson's series and the time derivative
- Markus Kahn
- · Replies 1 ·
Virial Expansion Approximation of of Lennard Jones Potential
- Diracobama2181
- · Replies 1 ·
Why do different term symbols have different energy levels in carbon?
- insanul
- · Replies 1 ·
Expectation value of an angular momentum with a complex exponent
- isochore
- · Replies 3 ·
Deriving Newtonian energy from Schwarzschild orbital equations
- JTorn
- · Replies 8 ·
How to Determine the Noether Current for a Given Symmetry and Lagrangian?
- Markus Kahn
- · Replies 5 ·
Combine 3 Eqns for Plasma in a Solenoid
- ccab521
- · Replies 1 ·
Canonical transformation in classical mechanics
- dRic2
- · Replies 5 ·
Finding the equation of motion for Born-Infeld lagrangian
- vahdaneh
- · Replies 1 ·
Rotational invariance in d=2+1 dimensions (Cherns-Simons term)
- binbagsss
- · Replies 3 ·
What is the Correct Way to Plot a 2D Ising Model Temperature Chart?
- tisseq
- · Replies 2 ·
Why is eta meson decay into 3 neutral pions forbidden?
- lLehner95
- · Replies 2 ·
What does [A,1] equal in a commutator?
- binbagsss
- · Replies 4 ·
How to Apply Fourier Transform to Green's Functions?
- lulia
- · Replies 1 ·
WKB method transmission coefficient
- B4cklfip
- · Replies 12 ·
Why is the Lie Bracket the same as the Cross Product for a 2 Sphere in R3?
- nigelscott
- · Replies 5 ·
Dummy index and renaming if not a tensor
- binbagsss
- · Replies 8 ·
Show that the given Green Function is the propagator of a certain Lagrangian
- Markus Kahn
- · Replies 1 ·
Feynman one-loop integral ##I_{21}##
- RicardoMP
- · Replies 1 ·
Find the eigenvector with zero eigenvalues at any time t from the Hamiltonian
- Jack_11
- · Replies 1 ·
Probability of Measuring ##L_x = 0## for a Given ##\psi##
- t0pquark
- · Replies 4 ·
Is My Solution to the Momentum Conservation Equations Correct?
- Sabra_a
- · Replies 5 ·
Find the photon energy in the center of mass frame and vice versa
- lLehner95
- · Replies 8 ·
Vector calculus identity and electric/magnetic polarization
- dRic2
- · Replies 27 ·
Expressing this vector integral as a tensor involving the quadrupole
- PhDeezNutz
- · Replies 2 ·
Yukawa Potential: Find Value of Parameter 'a
- MaestroBach
- · Replies 5 ·
Density Matrix of Unpolarized Light
- annaphys
- · Replies 1 ·
Heat Capacity of a Fermi Gas at Low Temperature
- Diracobama2181
- · Replies 4 ·
Repost/Merged Threads - Density: pressure and temperature dependency
- Tales Ferraz
- · Replies 8 ·
Lorentz transformation of 4-acceleration
- azazello
- · Replies 7 ·
Analytic solution of the Earth's orbit around the Sun
- Nasa123123
- · Replies 1 ·
Covariant derivative of a (co)vector field
- Markus Kahn
- · Replies 9 ·
Measuring the Transverse Velocity of a Galaxy
- fishlens
- · Replies 3 ·
Understand the Outer Product of two qubits
- safes007
- · Replies 1 ·
How to form the stress tensor component from the equilibrium equation?
- lachgar
- · Replies 9 ·
Is Your Induction Solution for Rotating Spheres Valid?
- Nirmal Padwal
- · Replies 3 ·
Question in Bose-Einstein statistics
- patric44
- · Replies 1 ·
What is the chemical potential of a diatomic gas in equilibrium?
- Diracobama2181
- · Replies 7 ·
How to determine whether a state is a ground state
- Haorong Wu
- · Replies 10 ·
Simple Harmonic Oscillator Squeezing
- t0pquark
- · Replies 1 ·
Finding the position of an image charge
- Arman777
- · Replies 2 ·
Time Dependent Perturbation Problem
- Diracobama2181
- · Replies 7 ·
Infinite square well, dimensionless Hamiltonian..
- Cocoleia
- · Replies 2 ·
Time Derivatives of Expectation Value of X^2 in a Harmonic Oscillator
- isochore
- · Replies 2 ·
Applying Selection Rules to Determine Non-Zero Ground State Perturbations
- Diracobama2181
- · Replies 4 ·
Figure 5.4(d) from Hecht optics: converging rays to plane wave
- e101101
- · Replies 5 ·
Selection Rules (Time Dependent Perturbation Theory)
- Diracobama2181
- · Replies 1 ·
The sphere in general relativity
- Markus Kahn
- · Replies 3 ·
Periodic images of dipole line charge followed by a vacuum space
- SK2
- · Replies 1 ·
Does the Rigid Rotator in an Electric Field Obey Parity Selection Rules?
- Diracobama2181
- · Replies 1 ·