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.
Threads
Undergrad What is the value of "delayed choice" experiments?
- MichPod
- · Replies 25 ·
High School Preserving local realism in the EPR experiment
- kurt101
- · Replies 81 ·
Graduate Why do space translations satisfy the Wigner's Theorem?
- NessunDorma
- · Replies 7 ·
Undergrad How elementary particles form matter
- LeInvertedPenguine
- · Replies 4 ·
Undergrad Trouble understanding the idea of a cavity radiator being a Black Body
- kal
- · Replies 9 ·
Undergrad Einstein's View of Quantum Mechanics
- bhobba
- · Replies 43 ·
Undergrad Does measurement destroy the interference pattern in the 2-slit experiment?
- Kostik
- · Replies 12 ·
Graduate Mathematical Quantum Field Theory - Gauge Fixing - Comments
- Urs Schreiber
- · Replies 1 ·
Undergrad Superposition state and wavefunction collapse
- dyn
- · Replies 13 ·
High School Is Quantum Interference Evidence of Multiple Universes?
- TheQuestionGuy14
- · Replies 74 ·
High School The deduction of Schrodinger equation, I'm stuck
- Joao
- · Replies 5 ·
Graduate QM: Probability of measuring momentum
- WWCY
- · Replies 2 ·
Undergrad Hilbert space and conjugate of a wave function
- amjad-sh
- · Replies 17 ·
Undergrad Solving Dirac Algebra Arithmetic
- 43arcsec
- · Replies 1 ·
Undergrad Why this system has a rotational symmetry in Dirac equation?
- winding bird
- · Replies 2 ·
High School Does Quantum Immortality really mean we are immortal?
- TheQuestionGuy14
- · Replies 5 ·
Undergrad Momentum Entanglement: The Technicalities and Usage in Electron Experiments
- ftr
- · Replies 3 ·
Undergrad Computing CHSH violation bound
- facenian
- · Replies 7 ·
High School How and why do electron quantum numbers affect bonding?
- Hallucinogen
- · Replies 11 ·
Undergrad Infinitely strong magnetic field
- Hami Hashmi
- · Replies 7 ·
Graduate How high of atomic number to get g-block electrons?
- swampwiz
- · Replies 2 ·
Undergrad Total reflection in Feynman picture
- Swamp Thing
- · Replies 6 ·
Undergrad Quantum field theory and the hydrogen atom
- arupel
- · Replies 7 ·
High School Two Confusing Entanglement Scenarios
- Isaac0427
- · Replies 9 ·
Undergrad Is the Existence of Photons Proven by Modern Quantum Optics?
- ftr
- · Replies 12 ·
Undergrad Are Force carriers real or not
- ftr
- · Replies 15 ·
Graduate Does a wavefunction in a cartesian system create a one-dimensional subspace?
- SeM
- · Replies 11 ·
Undergrad Negative and Positive energy modes of KG equation
- bananabandana
- · Replies 1 ·
High School Does gravity affect quantum transition amplitudes?
- Aidyan
- · Replies 5 ·
Undergrad How Can Quantum Optics Model Gradually Varying Loss in Optical Media?
- Swamp Thing
- · Replies 1 ·
Undergrad Heuristic for simple two-photon scattering problems
- Swamp Thing
- · Replies 1 ·
Undergrad How does QFT handle particle creation and conversion?
- ftr
- · Replies 3 ·
Undergrad Understanding Noether Theorem & Transformations
- facenian
- · Replies 7 ·
High School Planck-Einstein relation and the Photoelectric Effect
- Abu
- · Replies 3 ·
High School Understanding the Charge Field: Effects on Particle Path and Alteration in Space
- Vendicar Decarian
- · Replies 16 ·
Undergrad IR divergences and total energies....
- asimov42
- · Replies 2 ·
Undergrad QM Assumptions Regarding Entanglement Properties
- Dadface
- · Replies 112 ·
Undergrad Doubt about partition functions in QFT and in stat Mechanics
- Iliody
- · Replies 5 ·
Graduate Is Normalizing a 4x4 Matrix Possible Using Multiple Methods?
- wondering12
- · Replies 2 ·
Undergrad Does 'Phase Inversion' grow exponentially?
- Ricardo Belchior
- · Replies 11 ·
Graduate Collision integral approximation in boltzmann equation
- mertcan
- · Replies 8 ·
Undergrad 2D LHO calculate ground state energy
- Das apashanka
- · Replies 8 ·
Undergrad Self education: how to proceed from QM to QFT?
- MichPod
- · Replies 22 ·
Graduate Is there an alternative form of the zero point energy?
- SeM
- · Replies 14 ·
High School Kim et al, 1999 experiment and causality
- Joao
- · Replies 28 ·
Undergrad How energy of light is conserved when passing through medium
- Gevorg
- · Replies 3 ·
Undergrad Is the Neutron Lifetime a Surprising Result of 'Unnatural' Numbers in Physics?
- tzimie
- · Replies 6 ·
Graduate Schouten identity resembles Jacobi identity
- MathematicalPhysicist
- · Replies 3 ·
High School Could a bouncing particle theory explain quantum behavior?
- Martin Rousev
- · Replies 1 ·
High School Correct English convention for |Psi|^2?
- Aidyan
- · Replies 4 ·
Undergrad Can phase shifts δl be calculated in scattering theory?
- Ado
- · Replies 2 ·
Undergrad Is Detailed Balance Satisfied in a Two-State System in Quantum Mechanics?
- cozycoz
- · Replies 1 ·
Graduate Derivation of the Casimir energy in flat space
- highflyyer
- · Replies 3 ·
Graduate How spin projector got included in inverse of Matrix?
- wondering12
- · Replies 1 ·
Undergrad Angular momentum state of a system
- yamata1
- · Replies 6 ·
Undergrad A question about Zee's book QFT in a nutshell
- ftr
- · Replies 4 ·
Insights The Vacuum Fluctuation Myth - Comments
- A. Neumaier
- · Replies 220 ·
Undergrad How to factorize the hydrogen atom Hamiltonian?
- yamata1
- · Replies 5 ·
High School Does Human Observation Affect the Double Slit Experiment Results?
- laymanB
- · Replies 99 ·
Undergrad Commutator of p and x/r: Elegant Derivation in Position Basis
- VKint
- · Replies 2 ·
High School Expanding space time and Virtual particles
- Mcbleak
- · Replies 6 ·
Graduate Generalizing distinguishability of photons on HOM dip?
- Cleber
- · Replies 1 ·
High School Spontaneous increase in energy level
- Getterdog
- · Replies 4 ·
Undergrad Meaning of Dirac Delta function in Quantum Mechanics
- Ibraheem
- · Replies 18 ·
Undergrad Understanding the no-clone theorem
- fog37
- · Replies 9 ·
Graduate Fermi and Bose gas in statistical mechanics
- Sang-Hyeon Han
- · Replies 1 ·
Graduate Is the Nexus Graviton a Thing?
- Gort
- · Replies 4 ·
Undergrad Hidden dimensions and quadratic term of a free field
- victorvmotti
- · Replies 4 ·
Graduate Reasonable measurement of both coordinate and momentum?
- MichPod
- · Replies 3 ·
Undergrad Energy of an electron with Schrodinger's equation
- cc94
- · Replies 4 ·
Undergrad Operation on complex conjugate
- Thejas15101998
- · Replies 2 ·
Graduate Osterwalder-Schrader theorem and non-relativistic QM
- king vitamin
- · Replies 6 ·
Undergrad Concepts to understand Quantum Tunneling
- SameerTahir
- · Replies 5 ·
Undergrad Wave Function Collapse: Quantifying Quickness
- Thejas15101998
- · Replies 8 ·
Graduate Can imaginary position operators explain real eigenvalues in quantum mechanics?
- SeM
- · Replies 2 ·
High School Quantum Teleportation Question from a Curious 10 year old
- Jacques Marrot
- · Replies 14 ·
High School Why doesn't this FTL communication scheme work?
- Christofer Br
- · Replies 6 ·
Graduate Implications of violation of the Leggett–Garg inequality
- alphajoza
- · Replies 7 ·
High School Quantum state of the Universe?
- laymanB
- · Replies 15 ·
Undergrad Squaring a Sum of Ket-Bra Operators
- jstrunk
- · Replies 1 ·
Graduate Superluminal Signalling proposal in peer-reviewed journal
- Pelion
- · Replies 12 ·
High School Bose–Einstein condensate and Hadron Collider
- PhyHyped
- · Replies 2 ·
Undergrad Fermi gas at the absolute zero T
- JH_Park
- · Replies 1 ·
Undergrad Concept underlying recent Serra-Lutz cold-to-hot experiment
- overzealous
- · Replies 2 ·
Undergrad Behavior that seems to violate the arrow of time, but....
- overzealous
- · Replies 19 ·
Undergrad Is the Compton scattering angle related to the incident energy?
- Adel Makram
- · Replies 3 ·
Graduate Hamiltonian in an electromagnetic field
- Lucy166
- · Replies 1 ·
Undergrad Can angular momentum be applied to non circular rotations?
- Fruit Water
- · Replies 2 ·
Undergrad Schwinger effect verified by Unruh temperature?
- jcap
- · Replies 5 ·
Undergrad Hamiltonian for an Optical Phase Shifter?
- Twigg
- · Replies 1 ·
Undergrad QCD Sign Problem: Adding Quarks, Does it Change Properties?
- tzimie
- · Replies 19 ·
Undergrad Spin Measurements: Up vs Down | Gf
- Getterdog
- · Replies 6 ·
Undergrad The Relation Between Wavefunctions in Dirac Equation
- Bob Dylan
- · Replies 11 ·
Graduate What are local and non-local operators in QM?
- cristianbahena
- · Replies 5 ·
Undergrad Dirac's Rest Mass in Minowski Spacetime
- Bob Dylan
- · Replies 4 ·
Undergrad Dirac-Delta Function, Different Integration Variable
- Ibraheem
- · Replies 14 ·
Undergrad Little issue regarding physical states
- Tio Barnabe
- · Replies 37 ·
Undergrad Modified double-slit experiment - two photons
- MichPod
- · Replies 13 ·
High School Quantum Mechanics is not a theory?
- Zafa Pi
- · Replies 19 ·
Graduate How does a pseudo-Hermitian model differ from a Hermitian?
- SeM
- · Replies 13 ·