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 Is the Evidence for Quantum Entanglement in Bacteria Strong Enough?
- jedishrfu
- · Replies 3 ·
Graduate Power of a Quantum Cascade laser by theory
- Adrian Tudini
- · Replies 1 ·
Undergrad Ejection of Only one electron by a Photon in the Photoelectric effect
- Zahid Iftikhar
- · Replies 5 ·
Undergrad Self-interference in double-slit experiments
- Euthan
- · Replies 47 ·
Graduate Canonical Quantization: Steps to Find iħ
- Wadih Hanache
- · Replies 1 ·
Insights The Unreasonable Effectiveness of the Popescu-Rohrlich Correlations - Comments
- RUTA
- · Replies 3 ·
Undergrad How was the spdf orbital designation derived?
- idea2000
- · Replies 5 ·
Undergrad How to prove SO(1,3)=SU(2)+SU(2)
- fxdung
- · Replies 1 ·
High School Any quotes from verified physicists about superposition?
- wittgenstein
- · Replies 28 ·
High School Does a photon's wave function collapse if it never interacts with mass?
- ExecNight
- · Replies 5 ·
High School Does a photon's probability get affected by a medium it doesn't enter?
- itoero
- · Replies 1 ·
Undergrad Why time intervals are calculable from measurements despite not being observables
- nomadreid
- · Replies 33 ·
Graduate Novel entangled photon source with heralding
- DrChinese
- · Replies 2 ·
Undergrad Stimulated emission when photon energy doesn't match the energy level difference
- fxdung
- · Replies 4 ·
Undergrad Computing inner products of spherical harmonics
- beefbrisket
- · Replies 1 ·
Undergrad Understanding Electron Behavior in Quantum Tunneling through Dielectrics
- Samson4
- · Replies 8 ·
Undergrad Summing Divergent Series and Borel Summation
- bhobba
- · Replies 5 ·
Undergrad Probability current density
- Abdul Quader
- · Replies 1 ·
Undergrad Represenation of a state vector in a different basis
- Higgsono
- · Replies 7 ·
Undergrad What is the relationship between Maxwell's equations and quantum field theory?
- Phylosopher
- · Replies 46 ·
High School Does the EPR experiment imply QM is incomplete?
- kurt101
- · Replies 225 ·
Undergrad Problem with section in Schwartz's QFT text
- HomogenousCow
- · Replies 6 ·
High School Computer-simulated quantum physics?
- Gerinski
- · Replies 2 ·
Undergrad Is the ground state energy of a quantum field actually zero?
- jcap
- · Replies 113 ·
Undergrad Particle creation, energy density and the Compton wavelength
- jcap
- · Replies 1 ·
High School Superposition - is the theory valid?
- Svenns
- · Replies 9 ·
High School How to think of molecular orbitals quantum mechanically
- Sophrosyne
- · Replies 7 ·
Graduate Information and successive measurments
- Higgsono
- · Replies 1 ·
Undergrad Why is separation constant l(l+1) instead of +-l^2?
- Rupul Chandna
- · Replies 2 ·
High School How Can a Hydrogen Atom Emit Multiple Colors Simultaneously?
- Bassel AbdulSabour
- · Replies 2 ·
Undergrad Arguments against instantaneous collapse
- kurt101
- · Replies 1 ·
Undergrad Gauge transformation preserves what?
- kiki_danc
- · Replies 17 ·
Graduate Quantum synchronization description used in a paper
- Danny Boy
- · Replies 1 ·
Undergrad Is Simultaneity still alive in QM?
- LarryS
- · Replies 23 ·
Undergrad Is Chronology Protection Still Relevant in Modern Physics?
- ErikZorkin
- · Replies 6 ·
Undergrad Lorentz invariance and equation of motion for a scalar field
- eoghan
- · Replies 10 ·
High School How does observation collapse the wave function in double slit experiments?
- JaredMessenger
- · Replies 32 ·
Graduate Young's double slit experiment with excited atoms
- PaleMoon
- · Replies 4 ·
Undergrad Does decoherence preserve information in the environment?
- nomadreid
- · Replies 8 ·
Undergrad Quantum effects and black hole singularities in loop quantum gravity
- Stu-W
- · Replies 11 ·
High School Pilot-wave is No More, Pilot-wave cracked by Bohr
- jedishrfu
- · Replies 7 ·
Undergrad Can the Born rule be derived from many-worlds interpretation?
- JG11
- · Replies 3 ·
Graduate Study Chern-Simons Invariant: Understanding 3-Manifold Measurement
- nateHI
- · Replies 1 ·
Undergrad Causality and quantum physics
- Jedothek
- · Replies 3 ·
High School Is entanglement severed after the first interaction?
- kurt101
- · Replies 29 ·
High School Change of variables in quantum harmonic oscillator equation
- Vol
- · Replies 22 ·
Undergrad Does the Casimir effect violate Lorentz invariance?
- asimov42
- · Replies 46 ·
Undergrad Validity of a paper on the standard conclusions from Bell, etc
- nomadreid
- · Replies 3 ·
Undergrad Difference between integrals in mathematics and quantum mechanics
- random_soldier
- · Replies 9 ·
Undergrad Rigorous definition of particles being far apart in QFT
- HomogenousCow
- · Replies 17 ·
High School Does simulation theory explain quantum tunneling and measurement?
- Sisko
- · Replies 33 ·
Graduate The half harmonic oscillator's ground state wave function
- Apashanka
- · Replies 2 ·
Undergrad Why can't we extract λ from φφ→φφ scattering in Schwartz QFT 15.4.1?
- HomogenousCow
- · Replies 1 ·
Undergrad Checking my understanding about how massive particle states transform
- kent davidge
- · Replies 3 ·
High School What really is the charge of the electron?
- Somali_Physicist
- · Replies 23 ·
Undergrad The total derivative of a wavefunction
- dyn
- · Replies 7 ·
Graduate Independence of Operator expectation values
- thariya
- · Replies 4 ·
Undergrad Time-dependence in probability amplitudes
- WWCY
- · Replies 7 ·
Undergrad Weinberg gives relations of SO(3)
- kent davidge
- · Replies 4 ·
Undergrad How Does the Rotation Operator Affect Spin in Quantum Mechanics?
- cristianbahena
- · Replies 10 ·
High School Energy of an electron = energy of photon emitted(?)
- Silv0155
- · Replies 1 ·
High School Can repeated measurements circumvent Heisenberg's uncertainty principle?
- DannyTr
- · Replies 19 ·
Undergrad Does the uncertainty principle apply to particles at a black hole singularity?
- Spas Stoilov
- · Replies 6 ·
High School Quantum Mechanics: Superposition of 2 States?
- kurt101
- · Replies 3 ·
High School Treating a galaxy as a quantum system
- chesleyadams
- · Replies 3 ·
Graduate Why is the partition for Fermions a sum of Boltzman factors?
- Philip Koeck
- · Replies 26 ·
Undergrad Why are spinors not observables?
- Silviu
- · Replies 3 ·
Undergrad Orthonormal Basis of Wavefunctions in Hilbert Space
- Jd_duarte
- · Replies 2 ·
Undergrad How do I derive the general expression for delta p times delta x?
- montecarlous
- · Replies 2 ·
Undergrad Why do physical electrons have spatial extension rather than point mass?
- asimov42
- · Replies 24 ·
Undergrad Can [A,B^n] always equal 0 if [A,B] equals 0?
- cdot
- · Replies 6 ·
Graduate Dirac's solution to the Klein-Gordon equation
- Philip Land
- · Replies 5 ·
Undergrad Historical basis for: measurement <-> linear operator?
- Stephen Tashi
- · Replies 2 ·
Undergrad Exploring the De Broglie Wave and Momentum in a Trapped Particle's Excited State
- Apashanka
- · Replies 1 ·
Graduate Fourier transform of outgoing spherical waves
- AlexBal
- · Replies 1 ·
High School Creation and annihilation operators in particle physics
- Sophrosyne
- · Replies 6 ·
Undergrad Hermitian Operator Proof - Question
- Jd_duarte
- · Replies 2 ·
Undergrad Polarizing filter not extinguish the wave although 90 degree polarizers
- Felipe Lincoln
- · Replies 6 ·
Undergrad On Heisenberg's uncertainty principle
- Ssnow
- · Replies 6 ·
High School Does anybody think that there is an underlying reality?
- clive williams-not
- · Replies 1 ·
Graduate Query in Zeidler's Volume II QFT
- Avogadro Number
- · Replies 5 ·
Insights Interview with astrophysicist Adam Becker
- Greg Bernhardt
- · Replies 132 ·
Insights Why the quantum: a response to Wheeler's 1986 paper
- RUTA
- · Replies 395 ·
Undergrad Light Through Matter: Quantum Mechanics & Complex Vectors
- forcefield
- · Replies 4 ·
Undergrad Feynman, Hibbs Transition Amplitudes and Energy
- crossword.bob
- · Replies 2 ·
High School Dynamics of the double slit experiment
- gerald V
- · Replies 1 ·
Undergrad How does the Franck-Hertz experiment demonstrate energy quantization in atoms?
- Pushoam
- · Replies 1 ·
Undergrad Solving SE for Particle in Box: Energy Level Relation
- Yajee
- · Replies 2 ·
Graduate 2-d and 3-d model for contact resistance of M/n-Si (book?)
- jaus tail
- · Replies 1 ·
High School Quantum mechanics defies causal order
- kurt101
- · Replies 5 ·
Graduate Nanotube diameter versus emitting wavelength
- Bruce Haawkins
- · Replies 2 ·
Undergrad Photons in the photoelectric efect
- Bruce Haawkins
- · Replies 1 ·
High School Entangled electrons in the Stern-Gerlach experiment?
- Quarky nerd
- · Replies 14 ·
Graduate Measuring the spin of a moving Dirac spinor particle
- Alhaurin
- · Replies 3 ·
Undergrad Double slit one source same as no slits with two sources?
- bahamagreen
- · Replies 12 ·
High School Is there an experiment proving observer dependency exists?
- Rtenhoor
- · Replies 8 ·
High School Does quickly removing the detector restore the interference pattern?
- Aj_
- · Replies 8 ·
High School Meaning of Wave Function Collapse
- Carpe Physicum
- · Replies 173 ·
Android robotics, quantum physics lab
- juzzy
- · Replies 6 ·
Undergrad Would this experiment prove consciousness causes collapse
- john taylor
- · Replies 8 ·