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.
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Graduate Why do massless particles have only two degrees of freedom?
- Lapidus
- · Replies 10 ·
Graduate An Interesting New Test of Realism
- DrChinese
- · Replies 10 ·
Graduate Deriving U(t,t') formula in Peskin Schroeder section 4.2
- praharmitra
- · Replies 4 ·
Graduate Particles are really planck size?
- rogerl
- · Replies 3 ·
Graduate What happens to a photon when its energy doesn't match an atomic transition?
- Xian
- · Replies 15 ·
Are there solutions to the uncertainty principle?
- quietrain
- · Replies 12 ·
Graduate Casimir vs van der Waals forces and their dependence on spacetime curvature
- Gavroy
- · Replies 15 ·
Graduate How can the Casimir effect result in a repulsive force between solid materials?
- OrigamiNinja
- · Replies 22 ·
Graduate Complex Conjugate applied to operators?
- Master J
- · Replies 1 ·
Graduate Why does an atom absorb a photon with twice the transition energy?
- touqra
- · Replies 10 ·
Graduate A couple of entanglment questions
- tj8888
- · Replies 2 ·
Graduate Do Wavefunctions Include All Possible Outcomes?
- Jarwulf
- · Replies 40 ·
Graduate Difference Between Non-Seperability and Non-Locality?
- mach567
- · Replies 2 ·
Graduate Why Is the Divergence of a Diagram ln(lambda) When D=0?
- ndung200790
- · Replies 2 ·
Graduate Crucial step Quantum mechanics
- Gavroy
- · Replies 6 ·
Graduate What Are the Implications of the Uncertainty Principle?
- bugatti79
- · Replies 29 ·
Graduate Why does psi times its complex conjugate give probability density?
- MHD93
- · Replies 11 ·
Graduate Finding energy of an electron analytically
- foota
- · Replies 2 ·
Graduate Quantum Entanglement and Communication
- ExecNight
- · Replies 8 ·
Graduate What does probability mean in quantum mechanics?
- madhatter106
- · Replies 22 ·
Graduate Is it possible to create a Positron - Electron cooper pair?
- jniehus
- · Replies 3 ·
Graduate Indistinguishability and entanglement
- Dorilian
- · Replies 21 ·
Graduate Finding <A| when |A>=U|a> with U antiunitary
- JamesBondi
- · Replies 1 ·
Graduate Construction of asymptotic states in QFT
- paweld
- · Replies 24 ·
Graduate Nonlinear measurements - HUP violation or not?
- espen180
- · Replies 1 ·
Graduate Preparation of Single qubit mixed states
- macduy
- · Replies 9 ·
Graduate Why the Integration Constant in the Schrödinger Equation is Set to L(L+1)?
- member 141513
- · Replies 3 ·
Graduate Can 1D Cavities Explain Free Space Physics in EM-Field Quantization?
- Niles
- · Replies 1 ·
Graduate Renormalisation constants in QED
- blackie1008
- · Replies 1 ·
Graduate Is electron spin a perpetual motion?
- member 141513
- · Replies 5 ·
Graduate Quantum tunnelling through a physical barrier vs potential barrier
- ShayanJ
- · Replies 2 ·
Graduate What the wave function exactly mean?
- angadaria
- · Replies 4 ·
Graduate How can I define what is the wavefunction
- Mancho
- · Replies 2 ·
Graduate Applying Perturbation to Mercury: Understanding Electron Behavior"
- zygi
- · Replies 3 ·
Graduate Where do all the interfered photons go?
- rchase
- · Replies 35 ·
Graduate 2 particles in a 1-dimensional box
- nemisis42
- · Replies 1 ·
Graduate Feynman propagator for Klein Gordon field in light and matter
- naima
- · Replies 4 ·
Graduate QED functions E(a to b) and P(a to b)
- Cemre
- · Replies 10 ·
Graduate In the reality how I perform the many kind of measurements, like operators p,q,E
- spocchio
- · Replies 1 ·
Graduate Meaning of electric dipole moment operator for atomic states
- elemental09
- · Replies 6 ·
Graduate Explanation why dosen't the electron fall into the nucleus?
- pivoxa15
- · Replies 74 ·
Undergrad Photoelectric Effect and energy
- MHD93
- · Replies 6 ·
Graduate Visibility of a specific waveleangth
- madhatter106
- · Replies 1 ·
Undergrad Classical and quantum physics.
- Dorilian
- · Replies 7 ·
Graduate What is going on with the indices
- vertices
- · Replies 2 ·
Graduate Quadratic Stark effect and polarizability consistency
- rgoerke
- · Replies 6 ·
Graduate Grassman number in functional quantization?
- ndung200790
- · Replies 1 ·
Graduate Energy-Time uncertainty: observer's clock or observed's?
- Polama
- · Replies 1 ·
Undergrad Would a Wave Plate Affect Interference in Young's Experiment?
- Dorilian
- · Replies 1 ·
Graduate Role of imaginary component in Raman wavefunction for bound states
- ixx
- · Replies 1 ·
Graduate Gravity: An Emergent Phenomenon According to Theoretical Physicist Erik Verlinde
- jaquecusto
- · Replies 1 ·
Graduate Which of the following particles would have the shortest wavelength?
- khamaar
- · Replies 3 ·
Graduate Causes Virtual Particles or Vacuum Energy or Other?
- rchase
- · Replies 1 ·
Graduate Does discretized space help explain quantum decoherence?
- Pythagorean
- · Replies 1 ·
Graduate Vacuum Energy and the Casmir Plate and Electromagnetics
- rchase
- · Replies 2 ·
Graduate What Does One Non-Trivial Irreducible Representation of Clifford Algebra Mean?
- countable
- · Replies 2 ·
Graduate Trace Theorems and Dirac Matrices
- dm4b
- · Replies 2 ·
Graduate The possibility of a Casimir Effect Battery
- siromar
- · Replies 12 ·
Graduate Non-hermiticity of fourth power of momentum operator in L=0 state of hydrigen atom
- jungljim77
- · Replies 3 ·
Graduate Is There a Superluminal Signal When Turning Off a Harmonic Potential?
- kof9595995
- · Replies 6 ·
Graduate Solving Confusing Indices in Operator Calculus
- countable
- · Replies 2 ·
Graduate Quantum physics, reality, consciousness and the hypnagogic/hypnopompic state
- madhatter106
- · Replies 1 ·
High School Are electrons and protons equal in attraction?
- nitsuj
- · Replies 16 ·
Graduate How do electrons produce atomic spectrum and what are sublevels?
- scientifico
- · Replies 2 ·
Graduate What is the mathematical basis of quantum mechanics?
- capandbells
- · Replies 18 ·
Graduate How to know if two photons are entangled?
- Dorilian
- · Replies 2 ·
Graduate Physicsal meaning of Expectation of two variables
- persist911
- · Replies 1 ·
Graduate Proof Scalar action is conformally invariant
- LAHLH
- · Replies 6 ·
Graduate What is the unidimensional case of a finite barrier inside a finite well?
- intervoxel
- · Replies 1 ·
Graduate Is the substitution of the numerator in QFT scattering amplitudes always valid?
- ismaili
- · Replies 2 ·
Graduate How can I take the inner product between a position eigenstate and a ket?
- rushton_19
- · Replies 1 ·
Graduate Time evolution in quantum field theories
- A. Neumaier
- · Replies 79 ·
Graduate When matter and anti-matter collide, in what form is the resulting energy?
- Jarfi
- · Replies 4 ·
Graduate Proving an operator is a projection operator
- km707
- · Replies 1 ·
Graduate Solving the Mystery of Guided Particles in a Black Hole
- Dmitry67
- · Replies 61 ·
Graduate How to measure which slit a photon went through
- michelcolman
- · Replies 2 ·
Graduate Why are there several gauge fixing choice for gauge symmetry fields?
- ndung200790
- · Replies 3 ·
Graduate How Does Measurement Angle Affect Quantum Entanglement Probabilities?
- guillefix
- · Replies 2 ·
Graduate What do square brackets mean in partial derivative notation?
- countable
- · Replies 3 ·
Graduate Regularization by differentiation respect to a parameter
- zetafunction
- · Replies 1 ·
Graduate Photon Antibunching: Clarifying Inverse Not Necessarily True
- Niles
- · Replies 2 ·
Graduate Interpreting Correlation Functions: (1) vs (2)
- RedX
- · Replies 1 ·
Graduate How Do Neutral Atoms Emit Black-Body Radiation?
- exmarine
- · Replies 1 ·
Graduate Does simultaneous viewing of separated recordings violate locality?
- Vulpes vulpes
- · Replies 5 ·
Graduate Where to find electron self-energy calculation in QED
- blackie1008
- · Replies 2 ·
Graduate Is Reality as We Know It Just an Illusion?
- RichyRich
- · Replies 9 ·
Graduate Differential equations in Quantum Mechanics
- gomes.
- · Replies 3 ·
Graduate The probability functional description of a wave
- peeyush_ali
- · Replies 9 ·
Graduate Canonical transformation in Hamiltonian
- jackychenp
- · Replies 8 ·
Graduate Double Slit Experiment: The Observer's Eye Affecting Matter
- MrFix
- · Replies 2 ·
Graduate Are clicks proof of single photons?
- A. Neumaier
- · Replies 155 ·
Graduate Thinking about the uncertainty principle.
- zeromodz
- · Replies 5 ·
Graduate Why is plasma frequency in ev and not hz
- OrigamiNinja
- · Replies 3 ·
Graduate Can Particles Be Connected Across Vast Distances?
- Jarfi
- · Replies 4 ·
Undergrad How Does the Star Trek Warp Core Utilize Matter-Antimatter Collisions?
- Ahmes
- · Replies 9 ·
Graduate Using the drude equation to find the dielectric function
- OrigamiNinja
- · Replies 1 ·
Graduate Definition of indistinct in pauli exclusion principle
- RedX
- · Replies 5 ·
Graduate Pauli exclusion principle, quantum states, and lasers?
- Juxtaroberto
- · Replies 8 ·
Graduate Symmetry, Lagrangian, Qm, and diff eqs.
- friend
- · Replies 8 ·
Graduate Do higher spin particles obey Klein-Gordon or Dirac equations?
- ndung200790
- · Replies 14 ·