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 Spin states of the addition of 2 spin 1/2 particles
- SimonRoberts
- · Replies 5 ·
Graduate Superposition and Coherence in quantum physics
- neelakash
- · Replies 3 ·
Graduate Nature of probabilistic measurement
- zonde
- · Replies 5 ·
Graduate Does the photon wavelenght come back to original when one path is blocked ?
- sanpkl
- · Replies 7 ·
Graduate How Do Bare Couplings Relate to Cutoff in Effective Field Theory?
- RedX
- · Replies 10 ·
Graduate Can Quantum Entanglement Transmit Information Faster Than Light?
- Rafaelh
- · Replies 25 ·
Graduate Singlet and Triplet Spin States
- joebo
- · Replies 5 ·
Graduate Photon and the field generated by an accelerated charge
- DaTario
- · Replies 7 ·
Graduate Field of an accelerated electron falling down to nucleus versus photon
- DaTario
- · Replies 21 ·
Graduate What is the Role of Conformal Symmetry in De Sitter Relativity?
- yoda jedi
- · Replies 6 ·
Graduate Can spacetime itself be entangled to enable teleportation?
- Auxon
- · Replies 11 ·
Graduate How does the hermiticity of Hamiltonian restrict its Lagrangian?
- crackjack
- · Replies 21 ·
Graduate Question on irreducible versus reducible Feynman graphs
- RedX
- · Replies 1 ·
Graduate What Distinguishes an Excitation Spectrum from an Absorption Spectrum?
- scarecrow
- · Replies 4 ·
Graduate Time derivative of momentum expectation?
- theneedtoknow
- · Replies 8 ·
Graduate Basic question on Zee-QFT in a nutshell
- LAHLH
- · Replies 2 ·
Undergrad Applying the time-independent Schrödinger equation to a 1D harmonic oscillator
- aliz_khanz
- · Replies 3 ·
Graduate A glance beyond the quantum model
- DrChinese
- · Replies 32 ·
Graduate Equipment for Quantum eraser experiment
- luxor99
- · Replies 3 ·
Graduate Absolute Time vs Relative Time
- Atheismo
- · Replies 1 ·
Undergrad Is Wave-Particle Duality Really Real? An Analysis of the Double Slit Experiment
- mintparasol
- · Replies 110 ·
Graduate How Many Qubits Are Needed to Accurately Simulate Hydrogen Molecules?
- jimgraber
- · Replies 6 ·
Graduate What's algebraic approach to QM good for?
- neworder1
- · Replies 7 ·
Graduate Solving 1 electron atom Schrodinger Equation in rectangular coordinates?
- VulpineNinja
- · Replies 4 ·
Graduate Non-spatial resolution of quanta (split off from Local realism ruled out? )
- jambaugh
- · Replies 5 ·
Graduate How quantum theory explains specific heat variation in solids
- roshan2004
- · Replies 2 ·
Graduate Group velocity is equal to the particle velocity?
- roshan2004
- · Replies 7 ·
Graduate Antiunitary time reversal operator
- maverick280857
- · Replies 40 ·
Graduate Does the Violation of Bell Inequality Challenge Quantum Mechanics?
- efaizi
- · Replies 1 ·
Graduate Concerning Quantum computers and information
- naggy
- · Replies 11 ·
Graduate Eigenvalue of the coherent state
- Tianwu Zang
- · Replies 8 ·
Graduate Need of Wave Packet: Schrodinger's Postulate
- roshan2004
- · Replies 3 ·
Graduate Retrocausality solves QM problems?
- jimgraber
- · Replies 8 ·
Undergrad What determines photon wavelength in electron transitions?
- novjo
- · Replies 4 ·
Graduate Information Loss in Photon Absorption?
- jacksonwalter
- · Replies 24 ·
Graduate Quanta and the conservation of energy
- diagopod
- · Replies 1 ·
Graduate Partial vs. Total Time Derivatives of Kets
- juan123
- · Replies 3 ·
Graduate EPR had a simple but powerful definition
- edpell
- · Replies 1 ·
Graduate How are quantum numbers used to classify eigenvectors of a Hamiltonian?
- samblohm
- · Replies 3 ·
Graduate Quantum mechanics at a biological macro level
- genphis
- · Replies 3 ·
Undergrad How does a single photon interfere with itself in the double slit experiment?
- Honorable_Death
- · Replies 37 ·
Graduate Electrons, holes and positrons
- Ranku
- · Replies 29 ·
Graduate Quantum spreading of polarization
- jimgraber
- · Replies 1 ·
Undergrad Using 74LS logic ICs with Karnaugh maps
- pinkojo
- · Replies 1 ·
Graduate Can photons and antiphotons annihilate when they collide?
- Ranku
- · Replies 25 ·
Undergrad How Do Karnaugh Maps Simplify Boolean Algebra?
- pinkojo
- · Replies 1 ·
Graduate Momentum eigenfunction question
- sakurashinken
- · Replies 8 ·
Graduate Does this experiment demonstrate that conscoiusness causes collapse?
- imiyakawa
- · Replies 44 ·
Graduate Why does squaring hf in the Compton shift derivation give h²f² + h²f'² + 2h²ff'cosθ?
- aliz_khanz
- · Replies 1 ·
Graduate Exponential of creation/annihilation operators
- ansgar
- · Replies 2 ·
Graduate Double Slit Experiment and Measurements
- LarryS
- · Replies 3 ·
Graduate Do fermions at a black hole singularity create Higgs bosons?
- whosyurdady
- · Replies 8 ·
Graduate Equation for the density of states
- phja
- · Replies 1 ·
Graduate What is the General Solution for Finding Orthonormal Bases in C^2?
- TimH
- · Replies 7 ·
Graduate Why doesn't the electron radiate?
- Quantum River
- · Replies 10 ·
Graduate Suggestion about research object(quantum mechanics)
- bobydbcn
- · Replies 2 ·
Graduate Static Electric Fields / virtual photons / Ionization
- azaharak
- · Replies 2 ·
Graduate Normalize wave functions with exponential factors
- legend
- · Replies 11 ·
Graduate Why do objects have a uniqueness and not blend?
- octelcogopod
- · Replies 10 ·
Graduate On the definition of Active Transformation
- neelakash
- · Replies 9 ·
Graduate Weinberg, QTF, pg 60:very specific question
- Living_Dog
- · Replies 3 ·
Graduate Why do QM particles with l<S vanish in a classical radiation field?
- Sourabh N
- · Replies 1 ·
Graduate The Casimir Effect as a source of clean/green energy?
- d_chappell
- · Replies 3 ·
Graduate Why use tensor products to combine separate quantum systems
- Goldbeetle
- · Replies 10 ·
Graduate Energy Liberated in Electron/Proton Annihilation
- sharma_satdev
- · Replies 5 ·
Graduate Quantum mechanics hydrogen atom
- sharma_satdev
- · Replies 2 ·
Graduate Understanding Zeroth Order Approximations in Landau Level Equations
- bobydbcn
- · Replies 2 ·
Undergrad Is What the Bleep Do We Know? Scientifically Accurate?
- Dav333
- · Replies 3 ·
Graduate What is a mass independent renormalization scheme
- RedX
- · Replies 1 ·
Graduate Harmonic oscillator in matrix form
- intervoxel
- · Replies 4 ·
Graduate Quantum Tunneling, Coulomb Barriers and Fusion
- inflector
- · Replies 2 ·
Graduate What is responsible for quantization?
- quasar_4
- · Replies 8 ·
Graduate Why Use Position-Space Calculations in Quantum Field Theory?
- niterida
- · Replies 1 ·
Graduate Can the de broglie formula still hold in a medium with reduced speed of light?
- Andeplane
- · Replies 4 ·
Graduate Superposition of the solutions of the Shrodinger equation
- smstry
- · Replies 12 ·
Graduate Do Virtual Particles Really Exist in Our Universe?
- Rouge72
- · Replies 31 ·
Graduate Lorentz-Transforming a Newton-Wigner State
- l-ame
- · Replies 4 ·
Graduate What exactly is the Sigma-ket-bra?
- TimH
- · Replies 6 ·
Graduate Is it possible for photons to dissappear in vacuum.
- leoneri
- · Replies 4 ·
Graduate Research Problem - 4-body Decay
- crad5
- · Replies 1 ·
Graduate Why are even and odd functions orthogonal in quantum mechanics?
- hasanhabibul
- · Replies 6 ·
Graduate Thermodynamic Evidence for Water as a Quantum Mechanical Liquid
- Count Iblis
- · Replies 2 ·
Graduate Quantifying the unQuantifyable?
- Supaiku
- · Replies 1 ·
Graduate Classically a particle cant exist in a region where V>E
- suku
- · Replies 31 ·
Graduate Mass of field for small fluctuations
- h0dgey84bc
- · Replies 1 ·
Graduate Fourier Transform of a productof Green functions
- Physicslad78
- · Replies 1 ·
Graduate How Does Electron Screening Affect Charged Particle Scattering in Atoms?
- MattLiverpool
- · Replies 4 ·
Why was the thread on Lamb's paper on the photoelectric effect locked?
- conway
- · Replies 3 ·
Graduate Operator in second quantization
- Alexios
- · Replies 4 ·
Graduate Collapse of wavefunction - how long it takes?
- paweld
- · Replies 19 ·
Graduate Why is -ih/2pi d/dx associated with the momentum operator in X basis?
- Mr confusion
- · Replies 22 ·
Graduate Feynman on infinite particles inside protons and relativity
- GreatBigBore
- · Replies 1 ·
Graduate Fermions must be described by antisymmetric and bosons by symmetric
- Mr confusion
- · Replies 18 ·
Graduate Recommended introductory quantum mechanics textbooks
- higgsnerd137
- · Replies 1 ·
Graduate Why reflection coefficient equals 1 for step potential when E<V0
- hasanhabibul
- · Replies 2 ·
Graduate Why does spin add in quantum mechanics?
- Xian
- · Replies 1 ·
Graduate What does the product AB of non-commuting operators represent physically?
- Fredrik
- · Replies 6 ·
Graduate When to use different forms of harmonic oscillator raising and lowering operators?
- intervoxel
- · Replies 3 ·
Graduate How Does the Charge Conjugate Dirac Field Transform in Quantum Field Theory?
- maverick280857
- · Replies 8 ·
Graduate Why Photon Spin on Z Direction Must be +1 or -1
- paweld
- · Replies 6 ·