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Rotational partition function for CO2 molecule
- DannyJ108
- · Replies 1 ·
Show that the Diffusion Eqn after substitution gives the Helmholtz Eqn
- jkthejetplane
- · Replies 12 ·
Debye Approximation of Heat Capacity in 1D
- jkthejetplane
- · Replies 1 ·
How Do You Solve H(T) at 1 MeV in Cosmology?
- Labboi
- · Replies 1 ·
A linear combination of states that diagonalize the Hamiltonian
- kajmunso
- · Replies 1 ·
Problem about dot product in probability density problem
- Another
- · Replies 12 ·
Black Body Entropy: Solving the Puzzle of q and N
- LCSphysicist
- · Replies 3 ·
Lagrangian density for a massive spring with end mass
- Another
- · Replies 1 ·
Feynman Rules on ##\phi^3, \phi^4## theory
- JD_PM
- · Replies 59 ·
Bianchi and Ricci Identities: Understanding and Applying in Tensor Calculus
- etotheipi
- · Replies 4 ·
Commutation and Measurement of Observables
- Mr_Allod
- · Replies 4 ·
Harmonic Crystal and Bogoliubov trasformation
- Satana
- · Replies 1 ·
Electrodynamics and the Poynting theorem
- AHSAN MUJTABA
- · Replies 2 ·
What Is the Correct Expression for the Emitted Field?
- MaestroBach
- · Replies 7 ·
What is the significance of Fermi Temperature?
- Old Guy
- · Replies 1 ·
Check Inversion Symmetry: Honeycomb Kitaev Model
- MatNiss
- · Replies 1 ·
Photoemission from a non-interacting electron gas
- SQUB
- · Replies 1 ·
Linear chain of oscillators and normal coordinates
- JTFreitas
- · Replies 7 ·
Semi-Empirical Mass and E=mc^2 close, but both off? Binding Energy calc
- MagneticNeutron
- · Replies 1 ·
Thermodynamic meaning of molar Gibbs free energy
- GranMix
- · Replies 5 ·
How to Solve the Advection Diffusion Problem Analytically?
- jkthejetplane
- · Replies 4 ·
What Are the Values of \(a\) and \(b\) in the Schwarzschild 4-Velocity?
- Omikron123
- · Replies 10 ·
How Long to Achieve Uniform Mixture in Helium Gas Experiment?
- Jameskd
- · Replies 1 ·
Dirac-Hamiltonian, Angular Momentum commutator
- JD_PM
- · Replies 20 ·
Plane pendulum: Lagrangian, Hamiltonian and energy conservation
- hicetnunc
- · Replies 6 ·
The oscillation of a particle in a special potential field
- Peter Jones
- · Replies 2 ·
Fermi Motion of Nucleons due to a Beam of Neutrinos
- vintagelover007
- · Replies 1 ·
Evanescent Waves in near field for aperture > lambda (diffraction)?
- PhDeezNutz
- · Replies 50 ·
Special relativity — Observer measuring the velocity of a passing rocket
- LCSphysicist
- · Replies 2 ·
Fermions, Bosons, and nonidentical particles in a 1-d oscillator
- MaestroBach
- · Replies 4 ·
How to Simplify the Covariant Derivative Transformation?
- JTFreitas
- · Replies 5 ·
Extinction correction (photometry)
- learningastronomy
- · Replies 1 ·
Flat band in tight-binding model with three energy bands
- Satana
- · Replies 1 ·
Quantum Mechanics determining the normalized constant of a particle
- tryingtolearn1
- · Replies 2 ·
Find the tensor that carries out a transformation
- Frostman
- · Replies 5 ·
Problem about the derivation of divergence for a magnetic field
- georg gill
- · Replies 5 ·
Relating scale factor to Ω with Hubble constant
- AHSAN MUJTABA
- · Replies 1 ·
Electrostatics problem related to polarization and a cylindrical dielectric
- AHSAN MUJTABA
- · Replies 20 ·
Separation of Variables: Find the potential b/w concentric hemispheres
- ligneox
- · Replies 2 ·
Motion of particles close to the Earth
- flyleaf_
- · Replies 1 ·
Heat Capacity of a Van Der Waals' gas in an Open system
- Astrocyte
- · Replies 6 ·
Problems on magnetic vector potential
- Tony Hau
- · Replies 1 ·
How Does Dipole Interaction Energy Vary with Orientation?
- physconomic
- · Replies 2 ·
Evaluating a momentum operator
- JD_PM
- · Replies 4 ·
Finding a unitary operator for quantum non-locality.
- koroshii
- · Replies 1 ·
Lotka Volterra estimate parameters from experimental data
- quantumCircuit
- · Replies 15 ·
Why Are Allowed Energy Levels Odd at ##x=0##?
- tryingtolearn1
- · Replies 11 ·
Reflection angle of light on a moving mirror in relativity
- Frostman
- · Replies 20 ·
Boundary Value and Separation of Variables.
- zhuang382
- · Replies 1 ·
Difficulty with Lagrange multipliers in Kardar's Statistical Physics book
- AndreasC
- · Replies 4 ·
Is the Heisenberg Picture Better for a Time-Dependent Hamiltonian?
- Mayan Fung
- · Replies 4 ·
Energy of a particle in an Infinite square well?
- zeus8olympus
- · Replies 5 ·
What happens to σ (conductivity) when the permitivity is negative?
- FrankJ777
- · Replies 1 ·
Euler Lagrange equations in continuum
- JD_PM
- · Replies 1 ·
The Harmonic Oscillator Asymptotic solution?
- patric44
- · Replies 21 ·
Programming a Diffraction Pattern by the (pseudo?) method of images
- PhDeezNutz
- · Replies 39 ·
Express this trajectory in terms of proper time
- JTFreitas
- · Replies 4 ·
Calculate a specific boost and rotation
- Frostman
- · Replies 16 ·
Proof of the generalized Uncertainty Principle?
- patric44
- · Replies 2 ·
Expanding second-order Runge-Kutta formula with series
- jkthejetplane
- · Replies 3 ·
Finding the wave function when given the momentum eigenstate
- tryingtolearn1
- · Replies 21 ·
Solving Poisson's equation ##\nabla^2\psi##
- AHSAN MUJTABA
- · Replies 30 ·
Dimensional analysis of the Froude Number
- Timburton91
- · Replies 1 ·
Griffiths Quantum Mechanics 2nd edition Chapter 8 equation is confusing
- edfink1
- · Replies 2 ·
Normalize the eigenfunction of the momentum operator
- LCSphysicist
- · Replies 4 ·
Showing that a state is unentangled under a certain condition
- JD_PM
- · Replies 10 ·
What Is the Ground State Density Requirement in Quantum Mechanics?
- dRic2
- · Replies 9 ·
Semiconductor (Diode) Lasers and Properties
- dalye13
- · Replies 2 ·
General Relativity: How many Christoffel symbols?
- AHSAN MUJTABA
- · Replies 4 ·
Harmonic oscillator with ladder operators - proof using the Sum Rule
- chocopanda
- · Replies 4 ·
Finding the generator of rotations for a 3-state triangle
- PhysicsKush
- · Replies 3 ·
In 2 consecutive decays, determine max and min energies for a particle
- peguerosdc
- · Replies 1 ·
Quantum Mechanics: creation and annihilation operators
- chocopanda
- · Replies 3 ·
A strange wave function of the Hydrogen atom
- omegax241
- · Replies 5 ·
MTW Ex 21.23 Poynting Flux Vector 'out of the air'
- TerryW
- · Replies 1 ·
Schrodinger equation in three dimensions. Atom with one electron.
- LCSphysicist
- · Replies 2 ·
Mass difference due to electrical potential energy
- Adams2020
- · Replies 40 ·
Point charge in region where Laplace equation must hold
- zhuang382
- · Replies 3 ·
How can I find conserved current for a Lagrangian involving vector fields?
- phywithAK
- · Replies 8 ·
A special case of the grand canonical ensemble
- Ted Ali
- · Replies 1 ·
Perturbation from a quantum harmonic oscillator potential
- Mayan Fung
- · Replies 2 ·
Spin probability of a particle state
- Zack K
- · Replies 1 ·
Working out ##\big[\varphi (x) , \varphi (0) \big]## commutator
- JD_PM
- · Replies 7 ·
Potential inside a uniformly charged solid sphere
- agnimusayoti
- · Replies 42 ·
Prove that phase-conjugate waves satisfy Maxwell's equations
- Haorong Wu
- · Replies 8 ·
Asymmetric beam torsion balance with shear flow
- tracker890 Source h
- · Replies 1 ·
Why does a symmetric wavefunction imply the angular momentum is even?
- mjmnr3
- · Replies 6 ·
Equations of relative motion with respect to a rotating reference frame
- Master1022
- · Replies 7 ·
Delta function for \nabla(log s), where s = \sqrt{x^2+y^2}
- zhuang382
- · Replies 2 ·
Minimal substitution on the Lagrangian of the complex KG field
- JD_PM
- · Replies 1 ·
Why Does the Potential Energy of the Wedge Appear in Lagrangian Mechanics?
- Another
- · Replies 5 ·
Why the Stern-Gerlach experiment didn't detect the L?
- patric44
- · Replies 4 ·
Atmospheric pressure as a function of altitude
- Karl Karlsson
- · Replies 15 ·
Modifying photon states to get a gauge symmetry
- JD_PM
- · Replies 7 ·
Verifying that the uncertainty is 0 for a QM state
- PhysicsKush
- · Replies 8 ·
Gross Pitaevskii one dimensional solution
- Yoris21
- · Replies 2 ·
Exponential Wavefunction for Infinite Potential Well Problem
- a1234
- · Replies 7 ·
Method of image with Green function
- hubrisos
- · Replies 5 ·
Probability of a state given the partition function
- Sat D
- · Replies 5 ·
Lagrangian mechanics, system of a spring and a pendulum
- TimmyD1
- · Replies 21 ·