Join in expert discussion on quantum physics. Quantum physics is the mathematical description of the motion and interaction of subatomic particles. Quantum Mechanics and Field Theory.
Threads
Graduate Is Quantum Experiment Randomness a Result of Incomplete Knowledge?
- rajeshmarndi
- · Replies 1 ·
Graduate Are subatomic movements random
- susskind99
- · Replies 12 ·
Graduate Are wavefunctions specifically describing electrons?
- lonewolf219
- · Replies 8 ·
Graduate The radial probability density for the hydrogen ground state
- ftr
- · Replies 9 ·
Graduate Superposition of macroscopic position states
- StarsRuler
- · Replies 1 ·
Graduate Quantization of hamiltonian with complex form
- Nixom
- · Replies 1 ·
Graduate Can Inertia Affect the Shape of Electron Clouds in Accelerating Ions?
- ravisastry
- · Replies 2 ·
High School What is the 4th dimension?
- tg22542
- · Replies 5 ·
Graduate Communication by means of entanglement for the layman
- Demos Mirak
- · Replies 8 ·
Graduate Ladder operator for harmonic oscillator, I don't get a mathematical
- fluidistic
- · Replies 3 ·
Graduate How Should We Think About Quantum Mechanics?
- AlfieD
- · Replies 8 ·
Graduate QED Interaction Lagrangian with two different fermions
- lfqm
- · Replies 4 ·
Graduate Feynman diagrams - electrical charges
- Camille
- · Replies 4 ·
Graduate Angular momentum operators as infinitesimal generators
- Yoran91
- · Replies 1 ·
Graduate Why does Quantum Mechanics have objective statistical characteristic?
- ndung200790
- · Replies 3 ·
Graduate Is the Spin Orbit Hamiltonian really Hermitian?
- maverick280857
- · Replies 6 ·
Graduate Why quantum effects disappear at the classical level
- g.lemaitre
- · Replies 68 ·
Graduate Is destruction of dbl-slit interference pattern wavefunction collapse?
- andrewkirk
- · Replies 10 ·
Graduate Replacing an operator of an angular momentum for a constant.
- 71GA
- · Replies 2 ·
Undergrad Is the Non-relativistic Schrodinger Equation the right one?
- gmehra
- · Replies 2 ·
Graduate Hydrogen Atoms under Magnification (paper)
- DennisN
- · Replies 1 ·
Graduate Is the Dirac equation a field equation or a wave function equation?
- ndung200790
- · Replies 4 ·
Graduate The cause of particle going through one slit of the other
- susskind99
- · Replies 6 ·
Graduate Pauli spin matrices and hbar/2
- lonewolf219
- · Replies 7 ·
Undergrad How can light be both a wave and discrete packets of energy?
- Saado
- · Replies 5 ·
Graduate Callan-Symanzik equation and the running coupling.
- center o bass
- · Replies 1 ·
Undergrad Undergraduate-level explanation of Dirac Equation?
- lizzie96
- · Replies 7 ·
Graduate Why Does the Kraus Map Need to be Completely Positive?
- Henriamaa
- · Replies 1 ·
Graduate Why is probability of transition between states found with squared overlap?
- rida
- · Replies 2 ·
Graduate Why don't we perceive systems during decoherence?
- StarsRuler
- · Replies 1 ·
Graduate The Time Symmetry Debate in Quantum Theory
- TrickyDicky
- · Replies 165 ·
Graduate What is the QED LSZ-reduction formula?
- center o bass
- · Replies 1 ·
Graduate Where can I find resources to learn the math behind quantum mechanics?
- PhysicsDad
- · Replies 12 ·
Graduate Are quantum mechanical effects faster than speed of light?
- kannan_k
- · Replies 26 ·
Graduate QED running coupling definition.
- center o bass
- · Replies 2 ·
Graduate Artificial magnetic monopoles and Maxwell's equations
- Charles Wilson
- · Replies 1 ·
Graduate Does mass depend on energy scale?
- geoduck
- · Replies 1 ·
Graduate What are some recommended free Quantum Optics PDFs for learning and reference?
- Spinnor
- · Replies 3 ·
Graduate Ward identity from Ward-Takahashi identity?
- center o bass
- · Replies 2 ·
Graduate Quantum eraser and the experimenter's retina?
- garyrob
- · Replies 2 ·
Graduate What are the properties and applications of ferromagnetic thin films?
- vinzie
- · Replies 6 ·
Graduate Why Lagrangian is Used in Quantum Field Theory
- lonewolf219
- · Replies 5 ·
Graduate Entanglement Hypothesis by de Broglie in 1935
- genefalk
- · Replies 5 ·
Graduate General Gauge Invariance Problem
- llorgos
- · Replies 2 ·
Graduate Wave Function Collapse and Entropy
- stevendaryl
- · Replies 49 ·
Graduate Time Evolution of Measurables(Hamiltonian)
- aim1732
- · Replies 2 ·
Graduate Looking for mentor to answer QFT questions during 8-week REU
- lonewolf219
- · Replies 2 ·
Graduate Hamiltonian of linear harmonic oscilator
- LagrangeEuler
- · Replies 12 ·
Graduate Do you have any interest in Quaternionic Quantum Mechanics?
- lee.spi
- · Replies 15 ·
Graduate Orthonormality of cosine eigenfunctions in the infinite square well
- Cogswell
- · Replies 2 ·
Graduate Is it possible to create a higher energy photon from two lower ones?
- zrek
- · Replies 11 ·
Graduate Bell Proof Against Hidden Variables in EPR
- msumm21
- · Replies 1 ·
Graduate Real Time Entanglement from the Zeilinger Group
- Charles Wilson
- · Replies 12 ·
Graduate Definition of a wavefunction as a function of position.
- 71GA
- · Replies 23 ·
Graduate Is coherence a single photon phenomenon?
- Einstein Mcfly
- · Replies 4 ·
Graduate Probability Greater than 1 in λφ^4 Theory
- geoduck
- · Replies 1 ·
Graduate Could packet round-trip times be an analog to qubits?
- MerryMoose
- · Replies 2 ·
Graduate I need all the information about theHeisenberg's uncertainty principle
- lee.spi
- · Replies 13 ·
Graduate Can Individual Gluons Be Extracted from a Nucleus?
- Physicist50
- · Replies 3 ·
Graduate What is the difference between quantum mechanics and QFT?
- lonewolf219
- · Replies 6 ·
Graduate Photon emission by an excited hydrogen atom
- Ruslan_Sharipov
- · Replies 4 ·
Graduate Classical Limit formula for differential cross section for Hard Sphere
- aim1732
- · Replies 7 ·
Graduate Common eigenvalues for two states or two bases of same state?
- nomadreid
- · Replies 4 ·
Undergrad Why does vacuum have properties?
- jijopaul
- · Replies 3 ·
Graduate Is E Always Greater Than V(x) in the Time-Independent Schrodinger Equation?
- robotopia
- · Replies 1 ·
Graduate (Peskin and Schroeder) Numerator of vertex correction
- ndcat10
- · Replies 1 ·
Graduate Why does the density matrix contain temperature in one form but not the other?
- LagrangeEuler
- · Replies 1 ·
Graduate How did 19th century physicists approach the ultraviolet catastrophe?
- Physics Monkey
- · Replies 6 ·
Graduate Shouldn't the mass of an electron be uncertain?
- gamow99
- · Replies 1 ·
Graduate Unitarity angular momentum operators
- Yoran91
- · Replies 5 ·
Graduate Basic question on quantum mechanics and choice
- entropy15
- · Replies 10 ·
Graduate Cassimir's Dark Energy Plate Experiment
- JasonSouthworh
- · Replies 3 ·
Graduate Can UV photons spontaneously convert into IR photons, and vice versa?
- edevere
- · Replies 11 ·
Graduate How meaurements increase entropy?
- StarsRuler
- · Replies 9 ·
Graduate Degenerate perturbation theory degeneracy not lifted by perturbation
- tamaghna
- · Replies 8 ·
Graduate Http:www.univie.ac.at/qfp/publications3/pdffiles/1999-10.pdf real?
- StarsRuler
- · Replies 7 ·
Graduate So what exactly is entanglement?
- daveyrocket
- · Replies 7 ·
Graduate Non-locality and the Bekenstein bound?
- nomadreid
- · Replies 3 ·
Graduate Neutron Spin Time Evolution in Interferometer
- hpar
- · Replies 3 ·
Graduate Can Entropy Decrease After a Projective Measurement?
- StarsRuler
- · Replies 3 ·
Graduate Quantum Behavior As Extreme Classical Behavior
- sanman
- · Replies 30 ·
Graduate If decoherence matters in 2 different observables
- StarsRuler
- · Replies 3 ·
Graduate Field transformations in Weinberg's QToF
- brodekind
- · Replies 3 ·
Graduate Spectrum of the Hamiltonian in QFT
- unchained1978
- · Replies 5 ·
Graduate Vacuum expectation values of combinations of ##a^\dagger## and ##a##
- LayMuon
- · Replies 2 ·
Graduate Wick theorem for particle-antiparticle annihilation
- LayMuon
- · Replies 6 ·
Graduate Four Handed Entanglement - With a Catch
- Charles Wilson
- · Replies 3 ·
Graduate Why express fields as annihilation and creation operators
- Ray
- · Replies 17 ·
Undergrad Is it possible to slow down/stop the light?
- Requadin
- · Replies 5 ·
Graduate How Does Quantum Entanglement Affect Electron Spin Measurements?
- bardeen
- · Replies 2 ·
Graduate Field Theory Partition Function
- unchained1978
- · Replies 2 ·
Graduate How does the Klein-Gordon Lagrangian relate to the equations of motion?
- nylonsmile
- · Replies 11 ·
Graduate How to solve for allowed energies with the WKB approximation?
- Hypercubes
- · Replies 2 ·
Graduate Optical theorem with infinite scattering potential
- ndung200790
- · Replies 6 ·
Graduate A modified double slit screen scenario- what would happen?
- bcrelling
- · Replies 4 ·
Graduate The Quasi Classical Approximation(Landau Lifshitz)
- aim1732
- · Replies 1 ·
Graduate Hankel Functions: Solutions to Cylindrical Wave Equation
- aim1732
- · Replies 7 ·
Graduate Relation between mass and wave function
- nil1996
- · Replies 5 ·
Graduate A single atom in a cold, closed, vacuum system.
- nukapprentice
- · Replies 11 ·
Graduate How Do We Correctly Calculate the Distribution of Bosons Among Energy Levels?
- ShayanJ
- · Replies 1 ·