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 Indivisible units of time and the quantum eraser experiment
- Gaz1982
- · Replies 4 ·
Undergrad Why is information that cannot be seen called entropy?
- td21
- · Replies 2 ·
Graduate What is the derivation for the vacuum density of states in the Purcell effect?
- Zarqon
- · Replies 1 ·
Graduate Calculating the Average Value of Square Spin for a Composite System
- Gvido_Anselmi
- · Replies 3 ·
Graduate Are massless particles always their own anti-particle?
- LarryS
- · Replies 17 ·
Graduate Do we need quantum mechanics to explain biological stuff?
- VforVendetta
- · Replies 2 ·
Graduate QM Sankar 2nd edition -- gram schmidt process on example 1.3.2
- bugatti79
- · Replies 2 ·
Undergrad Is matrix hermitian and its eigenvectors orthogonal?
- bugatti79
- · Replies 7 ·
Graduate Double Slit Question: Path Information & Observer's Experiences
- Gerinski
- · Replies 11 ·
Graduate Unruh Effect: Instantly Gaining Information from Acceleration
- tzimie
- · Replies 8 ·
Graduate Clarifying the Meaning of "Random" in Quantum Physics
- ScientificMind
- · Replies 56 ·
Graduate Quantum conditions for position and momentum operators
- _Kenny_
- · Replies 3 ·
Graduate What is the Schmidt Rank and Its Role in Measuring Entanglement?
- valesdn
- · Replies 3 ·
Graduate What is the wave function for the whole system/atom ?
- Quandemonitum
- · Replies 3 ·
Graduate Single electron wave packet in Fock space?
- MisterX
- · Replies 2 ·
Graduate Does Heisenberg uncertainty principle arise only from measurement interaction?
- Joker93
- · Replies 6 ·
Undergrad Bohr's Hydrogen Model: Does Electron Absorb All Energy?
- nuuskur
- · Replies 3 ·
Graduate Schrödinger equation for 2 particles
- olgerm
- · Replies 12 ·
Graduate How do we solve for equation 1.8.7 on page 33 of Shankar's QM 2nd Edition?
- bugatti79
- · Replies 9 ·
Graduate How can potentials be well-defined without violating U.P.?
- TomServo
- · Replies 6 ·
Graduate Derivation of Time Dependent Schrodinger Equation
- Peter Yu
- · Replies 2 ·
Graduate Quantum Zeno Effect: What is the argument?
- James MC
- · Replies 4 ·
Graduate Measuring Rabi Oscillations in a Two State Atom
- Julian Blair
- · Replies 5 ·
Undergrad What Is the Mass Defect of a Hydrogen Atom?
- Danyon
- · Replies 2 ·
Graduate Energy of a photon pulse in the Jaynes-Cummings model
- Julian Blair
- · Replies 7 ·
Graduate Orbital Angular Momentum: Need at least 2 particles?
- LarryS
- · Replies 2 ·
Graduate Does gravitational time dilation cause decoherence?
- Swamp Thing
- · Replies 35 ·
Graduate Different Ways of Trapping A Single Atom?
- Ryan Reed
- · Replies 5 ·
Graduate Why doesn't an electron in a Bohr orbit radiate energy while accelerating?
- harman90
- · Replies 6 ·
Graduate Electron double slit experiment
- Danyon
- · Replies 7 ·
Graduate What Does 0.1 Expected Photon Per Pulse Mean in Quantum Cryptography?
- phonon44145
- · Replies 1 ·
Graduate Double slit interference from antenna
- Danyon
- · Replies 4 ·
Graduate Differences between 3D nano-materials and bulk materials
- NewtonApple
- · Replies 1 ·
Graduate Dimensionality of the wavefunction in relative state
- Derek Potter
- · Replies 40 ·
Graduate Can an electron disappear when confined by closing a hand?
- Danilo Boskovic
- · Replies 22 ·
Graduate Does Dirac's positron discovery resolve the assume-or-discover dichotomy?
- Lucy Meadows
- · Replies 4 ·
Graduate Quantum Spectrum of a Hamiltonian with Linear Potential
- Andre' Quanta
- · Replies 1 ·
Graduate Does expansion a(t) affect QM probability density?
- Jimster41
- · Replies 4 ·
Graduate Has electron recoil from photon emission been measured experimentally?
- Danyon
- · Replies 23 ·
Graduate Photons from two sources versus one source
- Swamp Thing
- · Replies 11 ·
Graduate How do we know quantum entanglement works across billions of miles?
- imsmooth
- · Replies 15 ·
Graduate Bounds of Integration for Random Oriented particle
- relskhan
- · Replies 2 ·
Graduate What is meant actually by superposition?
- ftr
- · Replies 9 ·
Graduate Measurement problem in classical probability
- atyy
- · Replies 17 ·
Graduate What is the global and local symmetry in gauge theory?
- TimeRip496
- · Replies 4 ·
Graduate What is the relationship between photons and electrons in quantum field theory?
- enzan
- · Replies 29 ·
Graduate The relation between classical from quantum vs measurement perspective
- ftr
- · Replies 6 ·
Graduate If probability wave is true wouldn't there be flickering?
- deansatch
- · Replies 39 ·
Graduate Quantum field theory questions?
- Nick V
- · Replies 26 ·
Graduate Compute subband structure of graphene
- Isaac.Wang88
- · Replies 1 ·
Graduate What if dark energy is just orphan energy floating around in the universe?
- Micheth
- · Replies 21 ·
Graduate What are some good pedagogical QM papers?
- TomServo
- · Replies 6 ·
Graduate Relativistic Boltzmann (including QM) equation from entropy?
- ohannuks
- · Replies 2 ·
Graduate How Is the Cross Section Related to the Imaginary Part of the Action?
- Cluelessluke
- · Replies 4 ·
Measurement Rules Quantum Universe
- Rajkovic
- · Replies 45 ·
Graduate Heisenberg uncertainty principle calculations
- Jzhang27143
- · Replies 1 ·
Graduate What is renormalization exactly?
- ayush solanki
- · Replies 10 ·
Graduate How far do W+ - and Z guage bosons travel in m?
- HawkI
- · Replies 4 ·
Graduate What Dictates the Spin Direction of an Electron?
- Ryan Reed
- · Replies 9 ·
Graduate General solution for the time-dependent Schrödinger equation
- Dyatlov
- · Replies 5 ·
Graduate Delayed choice experiment article on science alert
- DaveC426913
- · Replies 30 ·
Graduate Harmonic trap in Bose-Einstein condensate experiments
- KFC
- · Replies 4 ·
Graduate Measurement, Quantum Wierdness and Single-Effect Events
- Runei
- · Replies 8 ·
Graduate Do electrons jerk when absorbing radio photons?
- Ponderer
- · Replies 43 ·
Graduate Can Electrons Bounce Off Voltage Potentials?
- DiracPool
- · Replies 9 ·
Graduate How does quantum randomness give rise to ordered thoughts and free will?
- black hole 123
- · Replies 8 ·
Graduate Quantum State of Cards: Is the Top Card Set Before Viewing?
- Jim Frank
- · Replies 9 ·
Graduate Is there a quantum theory of other entities besides particles and fields?
- ephen wilb
- · Replies 43 ·
Graduate Two different ways? (probability denstities and currents)
- AMB
- · Replies 8 ·
Graduate When are isomorphic Hilbert spaces physically different?
- A. Neumaier
- · Replies 3 ·
Graduate Position measurement in Non-Relativistic QM
- andresB
- · Replies 3 ·
Graduate Bell's Inequality - A misintepretation of probability?
- pat devine
- · Replies 5 ·
Graduate How Can You Access Time Reversibility in Quantum Mechanics?
- ephen wilb
- · Replies 8 ·
Graduate What is a topological phase transition and how is it characterized?
- aaaa202
- · Replies 1 ·
Graduate Electron recoil from light emission
- Danyon
- · Replies 2 ·
Graduate Solving Low-Density Fock Spacings Issues with "Product Fock Spaces
- JorisL
- · Replies 7 ·
Graduate How Long Do Quantum Effects Last in Biological Processes?
- exponent137
- · Replies 2 ·
Graduate Entangled photons and their Parents
- JasonWuzHear
- · Replies 1 ·
Graduate Wilson Loop and spontaneous symmetry breaking.
- askalot
- · Replies 3 ·
Graduate Radiation of accelerated charge in QM
- greypilgrim
- · Replies 10 ·
Graduate Quantum explanation for Passive Intermodulation (PIM)
- ande4jo
- · Replies 9 ·
Graduate What's the problem with (non-causal) nonlocality?
- greypilgrim
- · Replies 14 ·
Graduate Integral kernel in vacuum wave functional
- ShayanJ
- · Replies 6 ·
Graduate Double slit experiment: setup questions when firing one particle at a time
- bugatti79
- · Replies 20 ·
Graduate SU(N) symmetry breaking by non-trivial parity.
- askalot
- · Replies 8 ·
Graduate Reduced Density Matrix Entropy in 1D Spin Chain
- JorisL
- · Replies 3 ·
Graduate Shrodinger's cat is "invisible"
- Justice Hunter
- · Replies 25 ·
Undergrad Zero Potential Level: Excited State or Not?
- Samurai44
- · Replies 2 ·
Graduate Can Quantum Mechanics Have 'Elegant' Trajectories in Hilbert Space?
- Logic Cloud
- · Replies 3 ·
Graduate Quantum entanglement on a cosmological scale?
- tom aaron
- · Replies 14 ·
Graduate Photon emission from dipole antenna
- Danyon
- · Replies 2 ·
Graduate How/why decoherence rather than how/why coherence
- Gerinski
- · Replies 2 ·
Graduate Books on quantum mechanics with intuition
- Joker93
- · Replies 8 ·
Graduate Quantum Mechanics and Group Theory questions
- Nomajere
- · Replies 2 ·
Undergrad Why are s-orbitals spherical if electrons repel each other?
- Misha Kuznetsov
- · Replies 10 ·
Graduate Classical versus quantum momentum
- DiracPool
- · Replies 10 ·
Graduate Dirac Hydrogen Atom: Parity and Odd-Operator
- ChrisVer
- · Replies 3 ·
Graduate Shouldn't a metal at 0K emit electromagnetic radiation?
- voila
- · Replies 7 ·
Graduate The quantum number n and its restrictions
- pondzo
- · Replies 3 ·
Graduate Single particle double slit interference simulation
- jerromyjon
- · Replies 1 ·