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.
Sub-forums
Threads
Graduate Momentum information from position space wave function
- jmd_dk
- · Replies 1 ·
Graduate How does two particles get entangled?
- the_pulp
- · Replies 1 ·
Graduate Failure to make a Mach–Zehnder interferometer?
- Artlav
- · Replies 1 ·
Graduate Quantum entanglement - what attributes are entangled?
- TrifePhysics
- · Replies 7 ·
Graduate Can gravity emerge from electromagnetic and strong forces?
- MiloOfCroton
- · Replies 2 ·
Graduate Why hidden-variable theories can be assumed deterministic
- stevendaryl
- · Replies 10 ·
Graduate What is the significance of the renormalization scale μ?
- Jodahr
- · Replies 1 ·
Graduate Is there a smallest unit of energy that all energy is a multiple of?
- SarcasticSully
- · Replies 1 ·
Graduate Why can't fermionic fields build classical coherent states?
- sadegh4137
- · Replies 9 ·
Graduate Determinism, causality and field theory
- sadegh4137
- · Replies 4 ·
Graduate Total spin angular momentum meaning
- galvin452
- · Replies 4 ·
Graduate Determinism and Quantum Mechanics
- Saado
- · Replies 13 ·
Graduate Limits and/or Properties of Entanglemen
- Magiknight
- · Replies 1 ·
Graduate Do QED corrections strengthen or weaken hydrogen's binding energy?
- sb635
- · Replies 19 ·
Graduate How does the quantum vacuum appear to different inertial observers?
- Aidyan
- · Replies 23 ·
Graduate How Do Spin-0 and Spin-1 Propagators Differ in Quantum Field Theory?
- Kontilera
- · Replies 6 ·
Graduate Infinite Well and Boundary Conditions
- DaTario
- · Replies 9 ·
Undergrad Energy level transition questions
- Masonn
- · Replies 2 ·
Graduate Hardy's Paradox - Which Way Information
- StevieTNZ
- · Replies 6 ·
Graduate Propagators for time-dependent Hamiltonians
- AxiomOfChoice
- · Replies 1 ·
Graduate Questioning Bell's Assumption on All Local Hidden Variable Theories
- Dadface
- · Replies 79 ·
Undergrad An intuitive meaning to the phase constant k?
- rem1618
- · Replies 4 ·
Graduate PBR Paper, Calculation of Outcome Probabilities
- msumm21
- · Replies 3 ·
Graduate Is the Electromagnetic Field Omnipresent Throughout the Universe?
- San K
- · Replies 4 ·
Graduate What is a robust correlation in decoherence?
- dlgoff
- · Replies 7 ·
Graduate Can Alice and Bob play FTL ping pong?
- andrewkirk
- · Replies 13 ·
Graduate Stuekelberg interpretetion of anti-particles
- cabrera
- · Replies 3 ·
Graduate Difference between collapse, reduction, decoherence, weak and strong projection
- ahmad2l
- · Replies 12 ·
Graduate Solutions to Time-dependent Schrodinger Equation
- Positron137
- · Replies 4 ·
Graduate Why is Theory of Quantum Gravity needed
- Adrian07
- · Replies 10 ·
Graduate What is the entropy of the quantum state vacuum in inflationary theory
- Maximise24
- · Replies 1 ·
Graduate Time evolution operator versus propagate
- qtm912
- · Replies 2 ·
Graduate Reproducibility of measurements in quantum mechanics
- Geofleur
- · Replies 8 ·
Graduate Strong interaction and unified field theory
- shounakbhatta
- · Replies 1 ·
Graduate What's the connection between Dirac four-spinors and spin up?
- galvin452
- · Replies 6 ·
Graduate Subtraction point not physical mass
- geoduck
- · Replies 3 ·
Graduate Is v discrete in E=hv equation?
- SamRoss
- · Replies 11 ·
Graduate Energy conservation in a vacuum bubble
- Sonderval
- · Replies 11 ·
Graduate What is meant by two vectors transforming in the same way under SU(2)?
- silmaril89
- · Replies 1 ·
Graduate Spin-1 rep of su(2) vs. vector transformations
- copernicus1
- · Replies 2 ·
Graduate Selection of an interval affects the energy eigenstates - impossible
- 71GA
- · Replies 11 ·
Graduate Is Schrodinger's Cat Truly Both Alive and Dead Until Observed?
- Robert Noel
- · Replies 6 ·
Graduate Transitions on resonance with a cavity.
- wotanub
- · Replies 3 ·
Graduate Why not spatial Schrödinger and Heisenberg pictures in QFT
- Lanza52
- · Replies 5 ·
Graduate Deriving the pauli matrices from general su(2) matrix
- copernicus1
- · Replies 7 ·
Graduate Wave function of bonding orbital of Hydrogen molecule
- Gavroy
- · Replies 1 ·
Graduate Quantum behavior in a classical system?
- IttyBittyBit
- · Replies 18 ·
Graduate Quantization of Energy in Quantum Mechanics - Real Examples?
- Mitadru Banik
- · Replies 3 ·
Graduate How does quantum tunneling enable nuclear fusion in the Sun?
- Positron137
- · Replies 8 ·
Graduate How can I learn about Bose-Einstein condensate's experimental aspects?
- La_Simo
- · Replies 1 ·
Graduate Scattering matrix and correlation functions
- jackson1
- · Replies 4 ·
Graduate Grassmann field derivatives and commutation rules in Mandl & Shaw
- Vic Sandler
- · Replies 6 ·
Graduate What does it mean for particles to be excitations of quantum fields?
- eightsquare
- · Replies 42 ·
Graduate Light as a wave, which wave is the correct wave?
- Saado
- · Replies 12 ·
Graduate What Does the Diffused State of Electrons Around Nuclei Mean?
- ananya17
- · Replies 1 ·
Graduate Momentum of electromagnetic field
- neerajareen
- · Replies 2 ·
Graduate Good Quantum Optics Books - Recommendations Needed
- MelioraGator
- · Replies 3 ·
Graduate Quntum tunneling in financial markets?
- ovidiu69
- · Replies 13 ·
Graduate Understanding Spin States of Particles with Spin-1 and Spin-1/2
- Solarmew
- · Replies 4 ·
Graduate Boson statistics and the uncertainty principle
- neerajareen
- · Replies 4 ·
Graduate Why does quantum mechanics require time-reversibility and unitarity?
- sadegh4137
- · Replies 1 ·
Graduate Do photons of different energy interfere with each other?
- Ahmed Abdullah
- · Replies 7 ·
Graduate Can uncertainity principle be tweaked
- sr241
- · Replies 3 ·
Graduate Time Dependent Perturbation Theory - Klein Gordon Equation
- Sekonda
- · Replies 6 ·
Graduate Occupation Numbers Of Phonons/Photons
- pirate phy
- · Replies 2 ·
Graduate How negative energy solution has positive energy in lab?
- mings6
- · Replies 2 ·
Graduate Weinberg discussion on induced representations in his QFT Vol.1 Ch. 2
- thoughtgaze
- · Replies 7 ·
Graduate Uncertainty of an electron in a core
- 71GA
- · Replies 7 ·
Graduate What does the Heisenberg uncertainty principle mean for conjugate variables?
- ankities
- · Replies 1 ·
Graduate Do electrons produce electric and magnetic fields because they act like waves?
- ankities
- · Replies 2 ·
Graduate Extra minus sign in Mandl & Shaw QFT equation 13.120c
- Vic Sandler
- · Replies 8 ·
Graduate Subatomic Particles From Nothing?
- Nugso
- · Replies 24 ·
Graduate Mechanism behind photon absorption and photon emission
- iScience
- · Replies 4 ·
Graduate Why Do Only Certain Equal Time Contractions in Quantum Field Theory Not Vanish?
- Vic Sandler
- · Replies 3 ·
Graduate Quantum Mechanics and Observables
- quantumfoam
- · Replies 4 ·
Graduate Why are entangled states generic?
- metroplex021
- · Replies 26 ·
Graduate Wave function is a combination of eigenfunction?
- wasi-uz-zaman
- · Replies 9 ·
Graduate What state does a particle take on when we measure its momentum?
- andrewkirk
- · Replies 9 ·
Graduate Deriving equation (9.94) in Mandl & Shaw QFT, second edition
- Vic Sandler
- · Replies 3 ·
Graduate Understanding Quantum Monte Carlo Methods: Clearing up Doubts on Their Use
- Tilde90
- · Replies 1 ·
Graduate Upper bounds on temperature using Maxwell-Juttner distribution
- Positron137
- · Replies 6 ·
Graduate Conservation of momentum of single photon passing a slit
- zhanhai
- · Replies 4 ·
Graduate DCQE Question on Purpose of Glan Thompson Prisms
- daniel29209
- · Replies 2 ·
Graduate Can someone prove the uncertainty principle for me
- Maurice7510
- · Replies 4 ·
Graduate Eigenstates of Pöschl-Teller potential for non-integer λ
- BlackHole213
- · Replies 7 ·
Graduate The variation of a scalar field (from Ryder's QFT book)
- Kontilera
- · Replies 11 ·
Graduate We know that superposition principle is valid in Quantum Mechanics
- dorazyl
- · Replies 4 ·
Graduate Refraction and its connection quantum gravity
- fet2105
- · Replies 1 ·
Graduate Is Conservation of Momentum Overlooked in Bells Inequality Violations
- Point Conception
- · Replies 5 ·
Graduate Is Quantum World weird because we can 'see' higher dimensions?
- hankaaron
- · Replies 2 ·
Graduate Is there an error in the Feynman rules for QFT in the Mandl & Shaw book?
- Vic Sandler
- · Replies 11 ·
Graduate How Does Total Spin Quantum Number Affect Symmetry in a Two-Fermion System?
- Roodles01
- · Replies 1 ·
Graduate Seeking a non-technical book on the weirdness of QM
- andrewkirk
- · Replies 10 ·
Graduate Preferred basis in Relational Quantum Mechanics
- StarsRuler
- · Replies 10 ·
Graduate What's fundamental for quantum mechanics?
- SamRoss
- · Replies 5 ·
Graduate Lamb and The Photoelectric Effect Without Photons
- bcrowell
- · Replies 38 ·
Graduate Information loss in polarization.
- anorlunda
- · Replies 2 ·
Graduate Bells' Inequality Spin Violations
- Point Conception
- · Replies 5 ·
Graduate What is meant by spin actually?
- abi.ayan
- · Replies 2 ·
Graduate Where are charge and spin in Schrodinger's equation?
- SamRoss
- · Replies 8 ·