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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High School Question: Protons and Neutrons Popping into and out of existance
- TreeofSkills
- · Replies 2 ·
Graduate Does the potential change as an electron moves within an atom?
- granpa
- · Replies 1 ·
Graduate Why doesn't the Electron crash into the proton in an H atom?
- feynmann
- · Replies 51 ·
Graduate Wave function and spatial phase factor
- jostpuur
- · Replies 21 ·
Graduate What is the Meaning of [J1,J2] = 0 in the Addition of Angular Momenta?
- tommy01
- · Replies 4 ·
Graduate Incandescence and energy bands
- monstersaurou
- · Replies 1 ·
Graduate Spectral theory in quantum mechanics
- guhan
- · Replies 3 ·
Graduate Are Probability Waves Real Physical Entities or Just Theoretical Constructs?
- Charlie G
- · Replies 3 ·
Graduate Heisenberg's uncertainty principle
- filippo
- · Replies 6 ·
Undergrad Magnetic Field Composition: Unraveling the Mystery
- Charlie G
- · Replies 4 ·
Undergrad How does light show particle properties?
- markoX
- · Replies 5 ·
Graduate Energy becoming mass? Wilczek question
- Quantum_Grid
- · Replies 2 ·
Graduate Quantum Mechanics & Force: Wave-Particle Duality
- cam875
- · Replies 4 ·
Graduate Electron-Proton Collisions: Understanding the Quantum Dynamics
- cam875
- · Replies 14 ·
Graduate Wave-particle duality and electromagnetic waves
- JKaufinger
- · Replies 10 ·
Graduate Functional Integral in Free-Field Theory: Understanding the Derivation
- jdstokes
- · Replies 2 ·
Graduate What is the relationship between rest energy and frequency in quantum mechanics?
- LarryS
- · Replies 3 ·
Graduate How do photon-electron transitions relate to frequency and motion?
- SdogV
- · Replies 3 ·
Graduate Understand Uncertainty Principle in Computer Simulations
- cam875
- · Replies 17 ·
Graduate Construction of a Hilbert space and operators on it
- Fredrik
- · Replies 3 ·
Graduate What Are the Hidden Variables Behind Photon Wave Function Collapse?
- nutgeb
- · Replies 9 ·
Graduate Scattered states and bound states ?
- hiphys
- · Replies 2 ·
Undergrad Can Atoms Produce Photons Through Electron Excitation?
- Haibara Ai
- · Replies 3 ·
Graduate Understanding Zero-Point Energy: An Explanation for Confused Minds
- NJV
- · Replies 6 ·
Graduate Size of a photon's electromagnetic field
- nutgeb
- · Replies 13 ·
Graduate How can the Heisenberg formula be proven in simple terms?
- NJV
- · Replies 3 ·
Graduate Why does strong magnetic field destroy spherical symmetry of atom?
- xfshi2000
- · Replies 2 ·
Graduate Understanding Spin Matrix: Pauli Matrices and 6x6 Matrices
- Rajini
- · Replies 30 ·
Graduate Moment of inertia tensor of an electron?
- tiny-tim
- · Replies 3 ·
Graduate Debunking the Hype: The Truth About Quantum Cryptography
- MrGamma
- · Replies 22 ·
Graduate Spacetime states in Rovelli's book Quantum Gravity
- naima
- · Replies 1 ·
Graduate How did Planck come up with 'h'?
- Potentiator
- · Replies 26 ·
Graduate Trouble with QM's theory on Bell's discovery
- Gothican
- · Replies 10 ·
High School How can a atom generate photons ?
- live4physics
- · Replies 11 ·
Graduate Particle Physics Confusion: Understanding Fermions & Bosons
- electerr
- · Replies 9 ·
Undergrad How Do Quantum Numbers Shape Atomic Structure?
- cam875
- · Replies 5 ·
Graduate What does off-diagonal term mean?
- physlad
- · Replies 1 ·
Graduate What's wrong with my Schrodinger equation?
- tpg
- · Replies 8 ·
Graduate What is Local U(1) Gauge-Invariance and its role in electromagnetism?
- sudhirking
- · Replies 11 ·
Graduate Oscillation in Charged Particles
- sudhirking
- · Replies 2 ·
Undergrad What energy do electrons actually take in an orbital?
- feynmann
- · Replies 8 ·
Graduate Probability of a wave function
- soul
- · Replies 3 ·
Graduate What is the generalization of the BAC-CAB rule for operators?
- maverick280857
- · Replies 4 ·
Graduate Can Bosons and Leptons Coexist in Same Space?
- Haibara Ai
- · Replies 1 ·
Graduate Casimir Effect - min. distance between plates
- Dmitry67
- · Replies 4 ·
Graduate Reasons for natural occuring forces
- sudhirking
- · Replies 20 ·
Graduate Phase and signal velocity of light inside a medium
- lightarrow
- · Replies 6 ·
Graduate Is a proton's movement considered a subject of Quantum Mechanics?
- karkas
- · Replies 5 ·
Graduate Where are the anti-particles in a nuclie?
- sudhirking
- · Replies 10 ·
Graduate Exploring Quantum Leap: Causes, Effects, & Possibilities
- sudhirking
- · Replies 6 ·
Graduate Is Teleportation Mathematically or Theroretically Possible
- Sammyg
- · Replies 3 ·
Graduate A question from Weinberg's qft book
- bugl0ver
- · Replies 5 ·
Graduate Planck's Constant Related to Velocity of Light?
- LarryS
- · Replies 5 ·
Graduate Electromagnetic Force: Where Does Virtual Photon Get Its Energy?
- spidey
- · Replies 3 ·
Graduate Hartree-Fock Method vs. Configuration Interaction
- filippo
- · Replies 1 ·
Graduate Does Pauli's Exclusion Principle Prevent Atoms from Coexisting in Stars?
- Strang3r
- · Replies 2 ·
Undergrad Two Slit Experiment Setup and Variables
- benk99nenm312
- · Replies 1 ·
Graduate Reasons for phtonic radiation?
- sudhirking
- · Replies 2 ·
Graduate Symmetric/Antisymmetric states in nature?
- hendriko373
- · Replies 6 ·
Graduate Why Hamiltonian and L^2 Don't Commute in Linear Molecules
- filippo
- · Replies 1 ·
Graduate Understanding of double silts experiment
- LittleRocks
- · Replies 1 ·
Undergrad Atomic & Molecular Symbols: What Do They Mean?
- filippo
- · Replies 1 ·
Graduate How is entropy defined by boundary area in Holographic Principle?
- skeleton
- · Replies 1 ·
Graduate Is the Casimir Effect the Same for Insulators as for Metals?
- spidey
- · Replies 4 ·
Undergrad Hartree & Hartree-Fock: What's the Difference?
- filippo
- · Replies 1 ·
Graduate Reduce QED to QM: A Restatement Based on Creation/Annihilation Operators
- tim_lou
- · Replies 14 ·
Graduate Wave function and orbital question
- f24u7
- · Replies 3 ·
Graduate A single photon traveling in space
- Mr Peanut
- · Replies 8 ·
Graduate Deterministic Quantum Mechanics?
- Phrak
- · Replies 22 ·
Graduate How Does a Delta Potential Affect Bound States in a Quantum Infinite Well?
- KFC
- · Replies 3 ·
Graduate Wave Packet: What Is It? | Abhimanyu
- abhi sharma
- · Replies 3 ·
Graduate What do the symbols in quantum equations mean?
- electrogluon
- · Replies 8 ·
Graduate Could space-time be a property of matter in string theory?
- nuby
- · Replies 2 ·
Graduate QED: reflection of light in glass
- eliben
- · Replies 6 ·
Graduate Can I Tell if a State is Ground State?
- KFC
- · Replies 5 ·
Graduate What's actually happening in the photovoltaic effect
- Tam Hunt
- · Replies 13 ·
Graduate Model QM Behavior of Particle as Probability Waveguide
- BARRYPHYSICS
- · Replies 2 ·
Undergrad Single photon and the double slit
- IlyaZ
- · Replies 20 ·
Graduate Negative energy in Dirac theory
- feynmann
- · Replies 8 ·
Undergrad What path do electrons actually take in an orbital
- Cheman
- · Replies 42 ·
Undergrad Electrons Jumping: What Does it Mean?
- nuclear420
- · Replies 4 ·
Graduate How to Label Spin Hamiltonian by Ms in EPR Experiments?
- Rajini
- · Replies 4 ·
Graduate Entanglement between particles of no common history
- colorSpace
- · Replies 8 ·
Undergrad Is Compton Scattering Valid at 180 Degrees?
- snoopies622
- · Replies 8 ·
Graduate Another Stern-Gerlach Question
- msumm21
- · Replies 4 ·
Graduate Interaction picture (Is there a mistake in QFT books?)
- jdstokes
- · Replies 3 ·
Graduate State of an electron, including spin
- msumm21
- · Replies 2 ·
Graduate Heuristic explanation of why quantum mechanics plus SR imply antiparticles
- feynmann
- · Replies 4 ·
Graduate Sudden Approximation and Adiabatic theorem
- Yiping
- · Replies 1 ·
Graduate Treating operators with continuous spectra as if they had actual eigenvectors?
- Marcaias
- · Replies 1 ·
Graduate IV curve on photoelectric effect
- KFC
- · Replies 1 ·
Graduate Phonons vs Gauge Bosons: What's the Difference?
- nuby
- · Replies 1 ·
Graduate Is There a Link Between the Brain and Dark Energy?
- PJ2001
- · Replies 1 ·
Graduate Solving Potential V with Schrodinger Equation
- KFC
- · Replies 5 ·
Undergrad Fundamental reason behind Aufbau principle
- tgt
- · Replies 3 ·
Graduate Adiabatic Spin Manipulation in EPR Experiment
- Jon_Trevathan
- · Replies 8 ·
Undergrad Looking for Layman's Physical Explanation for the lowest energy level in atoms
- feynmann
- · Replies 29 ·
Graduate When a particle tunnels where does the energy come from
- matt_crouch
- · Replies 9 ·
Graduate Photons determine the property of an electromagnetic wave
- FrankJ777
- · Replies 5 ·
Graduate Quantum Fluctuations of Negative Energy
- Unredeemed
- · Replies 7 ·