Advanced Physics Homework Help Forum

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Free advanced physics homework help via qualified mentors. Upper undergraduate and graduate level. Please use the template when requesting help and show your work.
Transformations with the Mukhanov variable (Cosmology)
  • ergospherical
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Calculation of matrix element for ##e^{+}e##-->##\mu^{+}\mu##
  • dark_matter_is_neat
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Quantum Well Centred at the Origin Doubled in Size at time t=0. Symmetry seems to render the question incorrect
  • kodel420
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Charge-Conjugation property
  • BobaJ
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Nuclear Macroscopic cross-section
  • badvot
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Solve this Hamiltonian System in Several Ways
  • ResiRadloff
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Gyroscope (Coriolis Torque and Force)
  • andyonassis
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Show that energy E always exists such that junction conditions have a solution
  • Penny57
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Timelike geodesic curves for two-dimensional metric
  • Fisherlam
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Equations of motion for Lagrangian of scalar QED
  • BobaJ
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Struggling With Plasma Physics Question
  • fizicksiscool
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How do you solve for multiple constants given the wave functions at the boundary?
  • Danielk010
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Calculating exciton Green's function on a tight binding chain
  • physicsxanime
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Relativistic elastic proton collision
  • jamesw1
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Equation for neutrons in a nuclear reactor
  • slam
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Reproduce band structure Kagome Fermi-Hubbard using Python
  • randomquestion
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What is the energy equation in Schrodinger's Spherical equation?
  • Danielk010
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Z, <U>, and C for Hagedorn Spectrum
  • dark_matter_is_neat
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Solutions for nonrelativistic-matter perturbations
  • happyparticle
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Continuity Equation for a Dimensionless Harmonic Oscillator
  • flyusx
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Finding the inverse of 4th rank elasticity tensor
  • Pilou115
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Determine unit vector n such that (L dot n)psi(r) = (m*hbar)psi(r)
  • dark_matter_is_neat
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Homework Help: Quantum Information Theory 1
  • maomao
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Compton scattering in a general medium
  • weafq
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Entropy of disks in a 2d box
  • ergospherical
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Temp change of copper wire w.r.t. time for a constant applied voltage
  • AkhilP
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Lagrangian Problem (Find Relation between Amplitude and Momentum)
  • Wannabe Physicist
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Operators On Multivariable Wave Functions
  • flyusx
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Classification of Equlibrium Points
  • Martyn Arthur
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What To Project Upon When Doing QM Measurements?
  • flyusx
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Electric field at the edge of half planes
  • Bling Fizikst
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[Griffiths Electrodynamics] Finding the electric flux through this quarter cylinder
  • physics_student01
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Creating Schrödinger cat states with trapped ions
  • Marioweee
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Can You Set Energy Conditions in Zwienbach Exercise 6.2?
  • lambdadandbda
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Fourier transform of t-V model for t=0 case
  • randomquestion
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Relativistic 2 -> 2 scattering with all equal masses
  • Siupa
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Eigenvalues of Hamiltonian operator
  • Juli
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Determine torque on a dipole and quadrupole (in external E-Field)
  • LeoJakob
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How Do You Solve These Commutator Relations?
  • Juli
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If a rope is in free fall, does tension force act on it or not?
  • MatinSAR
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Fourier transform of triangle diagram
  • LCSphysicist
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Potential of particles moving on a circle attracted by elastic force
  • l4teLearner
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Can the Least Squares Method be expressed as a convolution?
  • Daniel Petka
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Where Did I Go Wrong in Proving Harmonic Motion in an Adiabatic Process?
  • pedrovisk
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How to Calculate the Cyclotron Magnetic Dipole Moment in a Penning Trap?
  • Izzyg
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Mistake in "Foundations of Electromagnetic Theory"?
  • MatinSAR
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Probability of finding a particle in the right half of a rectangular potential well
  • keyzan
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Is a Distribution Function a Ratio of Differentials?
  • flyusx
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Second order diagram for the "scalar graviton"
  • Hill
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Wave function of infinite potential well
  • keyzan
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Derive Lorentz transformations in perturbation theory
  • Hill
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Integral with delta and unit step functions in the integrand
  • Hill
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What does this derivative notation mean in Goldstein's Classical Mech?
  • zenterix
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Quantum Virial Theorem Derivation
  • flyusx
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The time-dependence of the expectation values of spin operators
  • Rayan
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Problems with the Riemann tensor in general relativity
  • Ineedhelpimbadatphys
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Dipole Moment of a Hollow Sphere, simplify calculation
  • LeoJakob
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How is the Exponential Term Derived in Time-Dependent Perturbation Theory?
  • Rayan
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Use Saha-Boltzmann statistics to get the relative number densities
  • Zapped17
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Perform suitable gauge transformations
  • LeoJakob
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Sign Issue with Zitelli Quantum Mechanics 3.6
  • katieranthony
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Rotation of macroscopic magnetization = average (Magnetization current density)
  • LeoJakob
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Loss of Hölder continuity by solutions of the Euler equations
  • Coelum
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Degenerate Perturbation: Calculating Eigenvalues
  • ergospherical
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How Do Perturbation Equations Affect FRW Cosmology Metrics?
  • ergospherical
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How Do You Calculate the Electric Potential of an Ellipsoid?
  • Amit Kumar Basistha
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How Do You Calculate the Average Square Speed of Argon Molecules?
  • petar rezek
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How Does Special Relativity Affect Photon Emission Angles?
  • lambdadandbda
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Calculating the Period of Fringe Pattern for Michelson Interferometer
  • cryforhelp104
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Probabilities out of non-normalizable functions?
  • AshIsH_0001
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Multiplication of Operators in Quantum Mechanics
  • Penny57
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Generalized coordinates and the Lagrangian
  • GLD223
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Equation of motion for a pendulum using Lagrange method
  • morpheus343
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The Divergence of the Klein-Gordon Energy-Momentum Tensor
  • GooberGunter
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Equation to give the lookback time as a function of redshift
  • happyparticle
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Given the potential find the eigenfunction
  • Ashphy
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New to the Einstein notation, having trouble with basic calculations
  • Ineedhelpimbadatphys
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Possible energy values given Hamiltonian
  • Rayan
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Sequential Stern Gerlech experiment
  • Rayan
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Average value of the impulse as the parameters vary
  • keyzan
  • · Replies 14 ·
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Prove that K is a tensor using quotient theorem
  • MatinSAR
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Problem Related to Photons with Mass
  • diffidus
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How Does the Dirac Delta Function Identity Apply in Equation (27) Derivation?
  • Safinaz
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Is there a "critical temperature" for 2D Boson gas?
  • Zhang Bei
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The equipotential surface of a system of two unequal charges
  • R A V E N
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Is the Lorentz Boost Generator Commutator Zero?
  • han
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Lorentz transformation of infinitesimal boost and rotation?
  • jag
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How to simplify \nabla (A.v) in the derivation of Lorentz force?
  • jag
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Time slows down at lower gravitational potential
  • guv
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Deriving the Hamiltonian of a system given the Lagrangian
  • astroholly
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Find out kinetic Energy using Rutherford Formula
  • Juli
  • · Replies 16 ·
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How does pressure balance work in the magnetosphere?
  • ergospherical
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Finding <x> using raising and lowering operators and orthonormality
  • milkism
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How can I get steady state of complicated heat transfer problem?
  • yhyoon0511
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What Is the Potential Between Semi-Infinite Conducting Planes at a 30º Angle?
  • OhNoYaDidn't
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What is the Maxima Condition in Holography?
  • Debam1224
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Two point masses, where is the force zero?
  • Lambda96
  • · Replies 19 ·
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Form of radial velocity along null geodesic under the Kerr metric
  • Bertin
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Why Are My Geodesic Calculations Dependent on an Unknown Function?
  • Gleeson
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What is the Balance of Linear Momentum in Continuum Physics?
  • Ihsan
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