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
Graduate Can Quantum Tunneling Enable Controlled Thermonuclear Fusion?
- Pooua
- · Replies 9 ·
Undergrad Do Photons Spin in Our Reference Frame?
- scope
- · Replies 4 ·
Graduate The spectral theorem and Hamiltonians
- AxiomOfChoice
- · Replies 12 ·
Graduate Adding Angular Momenta: Rules of Thumb?
- Heirot
- · Replies 2 ·
Graduate Hermitian conjugate of spinor product (Srednicki ch 35)
- LAHLH
- · Replies 2 ·
Graduate What is the furthest distance particles can interact and still become entangled?
- DWRLRX
- · Replies 1 ·
Graduate What does this notation mean exactly?
- Demon117
- · Replies 4 ·
Graduate Origin of Photons Irrelevant in Double Slit Experiment?
- Orionabc
- · Replies 10 ·
Graduate Why in nature there is no spinless fermion?
- wdlang
- · Replies 5 ·
Graduate Special case of energy value for a particle in a non zero potential region
- fluidistic
- · Replies 2 ·
Graduate What Does Quantization Mean for Electromagnetic Fields in Quantum Field Theory?
- snoopies622
- · Replies 6 ·
Graduate Lifetime of a Photon: Electron-Positron Annihilation & Speed of Light
- vivitar02
- · Replies 28 ·
Graduate Euclidean geometry doesn't exist?
- K1NS
- · Replies 8 ·
Graduate Photon Interaction: A Comprehensive Guide
- vivitar02
- · Replies 3 ·
Graduate Heisenberg equation of motion for fermions?
- pellman
- · Replies 7 ·
Undergrad Can Energy Gaps Determine Electron Excitation and Decay?
- Denver Dang
- · Replies 1 ·
Graduate Elitzur–Vaidman Bomb-Tester Extension for Boolean Variable Return
- viralplatipus
- · Replies 2 ·
Graduate Solving the Mystery of Schrödinger's Cat and Its Qualified Observer
- Quinzio
- · Replies 21 ·
Graduate The Polarization of electron ?
- inkbath
- · Replies 1 ·
Graduate Wave Particle Duality and its relation to the Wave Function
- torquerotates
- · Replies 2 ·
Undergrad How is heat caused by photons?
- Moviemann345
- · Replies 38 ·
Graduate Uncertainty principle and angular momentum
- Upisoft
- · Replies 1 ·
Graduate Time and alternate realities/universe
- Shawakaze
- · Replies 2 ·
Graduate Signicance of positive and negative frequencies?
- pellman
- · Replies 3 ·
Graduate Quantized Dirac Field Interacting with a Classical Potential
- maverick280857
- · Replies 5 ·
Graduate Anti-Zeno Effect: Verified & Explained
- relativityfan
- · Replies 1 ·
Graduate Question about an electric circuit and quantum physics
- Deo
- · Replies 7 ·
Graduate Position-Momentum Uncertainty Principle
- relativityfan
- · Replies 1 ·
Graduate Program for Traces of Dirac matrices
- PJK
- · Replies 4 ·
Graduate Particle in Well: Localization & Beyond
- notojosh
- · Replies 1 ·
Graduate What Is Quantum Foam and How Does It Shape Our Understanding of the Universe?
- filegraphy
- · Replies 1 ·
Graduate Very basic question(s) about photons
- candyred312
- · Replies 13 ·
Graduate Mass terms in quantum field theory
- voltan
- · Replies 3 ·
Graduate Why must the wavefunction be continuous in quantum mechanics?
- kuahji
- · Replies 24 ·
Graduate Operator B has a commutator [A,B]
- Christine90NY
- · Replies 1 ·
Graduate State vs Orbital: What's the Difference & Pauli Exclusion Principle
- nyxynyx
- · Replies 3 ·
Boundary terms in hilbert space goes vanish
- notojosh
- · Replies 1 ·
Graduate Understanding Hermitian Conjugates of $\psi^{\dag}\bar{\sigma}^{\mu}\chi$
- LAHLH
- · Replies 29 ·
Graduate What is the significance of the number 137 in quantum physics?
- AfRoMaNn
- · Replies 7 ·
Graduate Turing machine and quantum computers
- bifolco84
- · Replies 1 ·
Graduate Second order correction to the wavefunction
- robbo96
- · Replies 1 ·
Graduate Chain rule for functions of operators?
- pellman
- · Replies 8 ·
Graduate Dyson-Wick formalism in second-order QED - trouble with derivation
- Sojourner01
- · Replies 4 ·
Graduate Light-front coordinates and the vacuum.
- Jezuz
- · Replies 2 ·
Graduate What Conditions Must a Matrix Meet to Be a Density Matrix?
- natugnaro
- · Replies 7 ·
Graduate Space-Time — Momentum-Energy uncertainty relations
- etamorphmagus
- · Replies 17 ·
Graduate Counting and Grouping Feynman Diagrams
- tshafer
- · Replies 3 ·
Graduate Deriving Equation (3) from A. Zee's "QFT in a Nutshell" Chapter I.5
- kexue
- · Replies 4 ·
Graduate Can Linear Combinations of Non-Degenerate Eigenstates Form New Eigenstates?
- amir11
- · Replies 2 ·
Graduate Do Massless Particles Interact in Particle Physics?
- taylrl3
- · Replies 6 ·
Graduate Is Quantum Mechanics Linked to Divine Action?
- ikos9lives
- · Replies 2 ·
Graduate Difference among energy level,energy state and quantum state
- ELVIS0206
- · Replies 1 ·
Graduate Proof that commuting operators have a shared base of eigenfunctions
- jakotaco
- · Replies 3 ·
Graduate Fine structure, and hyperfine structure
- Denver Dang
- · Replies 3 ·
Graduate Is intrinsic momentum a fundamental property of particles?
- wdlang
- · Replies 12 ·
Graduate Spin-1/2 Particle Transformation: Spin-Z to Spin-X
- RedX
- · Replies 2 ·
Graduate How does the concept of wave functions apply to large objects?
- Ty1erC
- · Replies 1 ·
Graduate How Can Photons Be Manipulated to Move in the Same Direction?
- Novice4Life
- · Replies 8 ·
Graduate What Happens to a Charged Particle When Its Oscillator Potential Vanishes?
- relativist
- · Replies 1 ·
Graduate Elementary question:[A,B] = [A-<A>, B-<B>]
- nomadreid
- · Replies 3 ·
Graduate Does it make sense to define operators like r,theta, phi
- kof9595995
- · Replies 6 ·
Graduate Question on Completeness of a set of Eigenstates
- JK423
- · Replies 12 ·
Graduate Home Quantum Physics Experiments
- jimjones
- · Replies 22 ·
Graduate Single slit diffraction experiment
- svnaras
- · Replies 4 ·
Graduate Is there gravity at small scales?
- petm1
- · Replies 2 ·
Graduate Wondering about the origins of light?
- jeebs
- · Replies 10 ·
Graduate Zeroes of zeta function as energy levels?
- nomadreid
- · Replies 2 ·
Graduate The meaning (and validity) of fractional occupations in QM
- Einstein Mcfly
- · Replies 1 ·
Graduate Negative pressure in quantum mechanics
- relativityfan
- · Replies 2 ·
Graduate Measurement of two components of electron spin
- starfish99
- · Replies 8 ·
Graduate S-matrix formula from Lippmann-schwinger eqn
- muppet
- · Replies 1 ·
Graduate Scale of uncertainty principle
- rahuljayanthb
- · Replies 5 ·
Graduate Are Degenerate Energy Levels the Same as Ground States in Quantum Mechanics?
- Denver Dang
- · Replies 4 ·
Graduate Fundamental Measurement of Subatomic Particles: Techniques and References
- comote
- · Replies 3 ·
Graduate Wondering about the particle treatment of light?
- jeebs
- · Replies 1 ·
Graduate Where is the Electron in Schrodinger's Cat Paradox?
- scilover89
- · Replies 33 ·
Graduate Is action truly an observable in physics?
- JustinLevy
- · Replies 27 ·
Graduate How do we associate real measurements with theoretical quantities?
- pellman
- · Replies 9 ·
Graduate Rotational Invariance: Bosons vs Fermions
- relativityfan
- · Replies 4 ·
Graduate Does matter convert to photons only?
- HeisenbergSon
- · Replies 11 ·
Graduate Transitions caused by circularly polarized light
- The_Duck
- · Replies 1 ·
Graduate How Can I Improve My Understanding of NMR Modeling and Experiments?
- phygiks
- · Replies 7 ·
Graduate Analogue of the S.E. for photons?
- TriKri
- · Replies 8 ·
Graduate Why is entanglement essential for quantum computing?
- zZhang
- · Replies 1 ·
Graduate Minkowski vacuum: Poincare invariant, quasi-free state
- paweld
- · Replies 2 ·
Graduate Fock space in interaction theory
- ismaili
- · Replies 3 ·
Graduate Creating Models for Ed Witten's M-Theory
- catherineM
- · Replies 2 ·
Undergrad Question about spontaneous creation.
- Micsunderland
- · Replies 1 ·
Undergrad Light Transfer (Light Transmittance)
- hannalee
- · Replies 3 ·
Graduate Can I Walk Through a Wall with Quantum Mechanics?
- Waveparticle
- · Replies 6 ·
Graduate Exploring Left & Right Spinor Fields in Srednicki
- LAHLH
- · Replies 7 ·
Graduate Ionizing solutions to the hydrogen atom
- mordechai9
- · Replies 5 ·
Graduate Dispersion relation and Photonic Energy and Momentum Equations in QM
- DaTario
- · Replies 2 ·
Graduate Attraction between two charges in QED
- exponent137
- · Replies 4 ·
Graduate Is there a quantum nuclear theory?
- RJMooreII
- · Replies 24 ·
Graduate If two operators commute (eigenvector question)
- AxiomOfChoice
- · Replies 2 ·
Graduate Hawking radiation redshift (?)
- Edi
- · Replies 1 ·
Graduate Spin-spin relaxation time in water
- KBriggs
- · Replies 2 ·
Graduate Why need *complex* probability amplitude?
- Gerenuk
- · Replies 15 ·
Graduate Better than Bell: The GHZM Effect
- Daverz
- · Replies 1 ·