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 Using BEC to Propel a Solar Sail - What Do You Think?
- Yum Yum
- · Replies 3 ·
Graduate Gauge Transformations and (Generalized) Bogoliubov Transformations.
- strangerep
- · Replies 8 ·
Graduate Spin angular momentum operators
- ehrenfest
- · Replies 5 ·
Graduate Time-Dependent Schrodinger Eq: Integrating Time?
- Pythagorean
- · Replies 1 ·
Graduate Scalar field and spin 1/2 field
- captain
- · Replies 7 ·
Graduate 2 dimensional quantum mechanical situation
- captain
- · Replies 1 ·
Graduate Nuclear Gravitation Field Theory
- Jade Falcon
- · Replies 6 ·
High School Unraveling the Origin of Photons
- DanielS
- · Replies 13 ·
Graduate Newbie's Fundamental Doubt: Wave Function & Eigen Functions
- Shalini
- · Replies 2 ·
Graduate Klein-Gordon Field QM: Replacing Wave Function with Wave Functional?
- jostpuur
- · Replies 17 ·
Graduate Why Do Textbooks Use Different Signs in Gauge Covariant Derivative Notations?
- captain
- · Replies 1 ·
Graduate Question on Double Slit experiment
- prunthaban
- · Replies 25 ·
What do we mena by energy barrer
- nishu1988
- · Replies 1 ·
Graduate Renormalization group and cut-off
- Sangoku
- · Replies 1 ·
Graduate Can 4 Momentum be an Operator?
- captain
- · Replies 5 ·
Graduate Hamiltonian Symmetry: Implications for Negative Energies and Potential
- Sangoku
- · Replies 2 ·
Graduate (How) is a single photon polarized?
- Richard J
- · Replies 6 ·
Graduate Explaining Quantum Spin Without Math: Is It Possible?
- Hoof47
- · Replies 49 ·
Graduate Symmetric Potential: Reasons for Eigenstate Solutions
- jostpuur
- · Replies 1 ·
Graduate Rewriting a wave function superposition
- T-7
- · Replies 2 ·
High School Photon Size: Direction & Probability
- alvaros
- · Replies 244 ·
Graduate Thoughts about ∣Φ>=∣1>*C1+∣2>*C2
- orange juice
- · Replies 4 ·
Graduate Canonical Commutation Relation Explained?
- ice109
- · Replies 5 ·
Graduate What Is the Difference Between Albenian and Nonalbenian in Quantum Field Theory?
- captain
- · Replies 3 ·
Graduate Why is the Fourier Transform in QFT Divided by (2pi)?
- captain
- · Replies 11 ·
Graduate What is the relationship between mass and energy for photons?
- Seele
- · Replies 16 ·
Graduate Renormalization and divergent integrals.
- Klaus_Hoffmann
- · Replies 5 ·
Graduate Question about quantum mechanics
- drews
- · Replies 5 ·
Graduate Schrodinger's Equation: Reason for Acceptance?
- captain
- · Replies 8 ·
Graduate Quantum to Classical: Exploring Intermediate States through Varying Uncertainty
- Loren Booda
- · Replies 2 ·
High School Confused on Electron Double slit experment
- game45165
- · Replies 2 ·
Graduate What are the allowed energies for a quantum harmonic oscillator?
- Moham1287
- · Replies 6 ·
Graduate Does the Correspondence Principle Apply to All Quantum Systems?
- maverick280857
- · Replies 3 ·
Graduate Could Electron Interference Be Explained by Undetectable Waves?
- sadie
- · Replies 1 ·
Graduate Does Quantum Physics Affect the Cardiovascular System?
- Identity
- · Replies 6 ·
Graduate Diracs Quantization Condition & Magnetic Monopole Explained
- vincentryan
- · Replies 3 ·
Graduate Probability or Impossibility in QM?
- dkgolfer16
- · Replies 27 ·
Graduate Understanding interference and decoherence
- Talisman
- · Replies 1 ·
Graduate Casimir effect - Does it fit? Or NOT?
- eemaestro
- · Replies 3 ·
Graduate What is the meaning of canonical in quantum mechanics?
- captain
- · Replies 4 ·
Graduate Wave Packet: What is It & What Does NLS Say?
- hanson
- · Replies 5 ·
Graduate Can Sub-Atomic Particles Exist in an Unseen Dimension?
- brianthewhitie7
- · Replies 7 ·
Graduate Haag's Theorem, Perturbation, Existence and QFT.
- Son Goku
- · Replies 39 ·
Graduate Slow variables in Nonlinear Schrodinger Equation
- hanson
- · Replies 2 ·
Graduate Can the fabric of space-time transform into virtual particles?
- Nick666
- · Replies 8 ·
Graduate Fourier transform formulation of the dirac delta
- ehrenfest
- · Replies 1 ·
Graduate Quantum Loops: Solving the Particle-in-Potential Problem
- Klaus_Hoffmann
- · Replies 4 ·
Graduate Getting Started with Klein's Paradox: A Forum Q&A
- plxmny
- · Replies 7 ·
Graduate Weak measurements? Modified Double slit
- Mephisto
- · Replies 24 ·
Undergrad What does the negative sign mean in the work function calculation for lead?
- Physicist
- · Replies 2 ·
Graduate I've found a way to see electrons (?)
- hrishikesh
- · Replies 3 ·
Undergrad Photodetection Theory: Photo-Oltaic, Photo-Emissive, Photo-Conductive
- DaTario
- · Replies 6 ·
Graduate Novice question about heat, ZPE and HUP
- jackle
- · Replies 4 ·
Graduate What is the velocity of an orbiting electron in an atom?
- Maalolan
- · Replies 1 ·
Graduate Understanding Quantum Tic Tac Toe & Event Horizon
- melrose
- · Replies 5 ·
Graduate On Heisenberg Principle - ParticleWave Hybrid
- Llewlyn
- · Replies 1 ·
Graduate Does the Charge of Photons Change Our Understanding of Light?
- ArielGenesis
- · Replies 3 ·
Graduate Why doesn't QM make particles zig-zag as they travel?
- vpoko
- · Replies 43 ·
Graduate Is Filming Free Electron Motion in Superfluid Helium Possible?
- Proof.Beh
- · Replies 5 ·
Graduate Quantum optical application of Pascal Principle
- DaTario
- · Replies 2 ·
Graduate Modified Mach-Zehnder Interferometer
- birulami
- · Replies 2 ·
Graduate Are Solitons the Only Type of Waves in Wave Equations?
- Klaus_Hoffmann
- · Replies 7 ·
Graduate Fourier Integral involving a position operator
- maverick280857
- · Replies 27 ·
Graduate How make a confront between energy levels?
- ClubDogo
- · Replies 1 ·
Graduate What is the Concept of a Fractional Dimension Probability Sphere?
- bchui
- · Replies 2 ·
Is a Website a Reliable Source for Random Bits?
- rohanprabhu
- · Replies 3 ·
Undergrad In the formula E=nhf for a photon, what is n ?
- physgirl
- · Replies 3 ·
Graduate What Are Quantum Gates and How Do They Relate to Nuclear Spin?
- quasinerd
- · Replies 1 ·
Graduate Conditions for entanglement to exist
- neorich
- · Replies 5 ·
Graduate Why adj( U(t)) * U(t) = I where U(t) is a propagator in QM?
- ehrenfest
- · Replies 4 ·
Graduate Path Integral & Quantum Mechanics: Beyond the Speed of Light?
- touqra
- · Replies 3 ·
Graduate The temperature is also quantized?
- maris205
- · Replies 2 ·
Graduate Euler-Lagrange equations in QFT?
- Sunset
- · Replies 11 ·
Graduate Does frequency make sense in terms of one particle?
- vpoko
- · Replies 5 ·
Graduate Electromagnetic field vs. photon(s)
- birulami
- · Replies 5 ·
Graduate Quantum Teleportation: Is it the Biggest Rip-Off Since Miss Cleo?
- Liger20
- · Replies 22 ·
Graduate Is There a Definitive Answer to the Existence of Action in Quantum Mechanics?
- smallphi
- · Replies 40 ·
Graduate Understanding the Single Photon in Double Slit Experiments
- Phymath
- · Replies 5 ·
Graduate Does Supersymmetry Breaking Compromise Poincare Invariance?
- alphaone
- · Replies 7 ·
Graduate Which formula for the energy of the first orbital of hydrogen is correct?
- physgirl
- · Replies 7 ·
Graduate Propagator Equation: Explaining Integral
- ehrenfest
- · Replies 9 ·
Graduate What does it mean that a wave packet has an uncertainty
- ehrenfest
- · Replies 5 ·
High School Does an electron gain velocity when it drops to a lower energy level in an atom?
- Brock
- · Replies 12 ·
Graduate Are Entangled Photons the Same Particle?
- freerangequark
- · Replies 2 ·
Graduate What is the Definition of Measurement in Quantum Physics?
- madness
- · Replies 24 ·
Graduate Can Virtual Particle Annihilation in the Dirac Sea Generate Detectable Light?
- saderlius
- · Replies 13 ·
Undergrad How Does Threshold Frequency Support the Particle Theory of Light?
- Minnie
- · Replies 6 ·
Graduate What is the paraquantization? How does one develop a geometric pq?
- theyazen
- · Replies 5 ·
Graduate What is Propagator in Quantum Mechanics?
- jostpuur
- · Replies 5 ·
Graduate Quantum physics vs. Quantum Mechanics
- WarrickF
- · Replies 27 ·
Graduate Covariant quantum field theories
- Jim Kata
- · Replies 10 ·
Graduate Questions about operators in QM
- atifelahi
- · Replies 1 ·
Graduate How does one develop a Hamiltonian for a free particle?
- ehrenfest
- · Replies 2 ·
Graduate Are Virtual Particles Real or Just a Concept in Physics?
- michael879
- · Replies 13 ·
Graduate Does Moon exist if you don't look at it?
- lightarrow
- · Replies 18 ·
Graduate Anticommutation Example: Solving for Operator p in Relation to Variable q"
- jostpuur
- · Replies 6 ·
Graduate Locality/nonlocality for bound states - a question
- pawelsobko
- · Replies 7 ·
Graduate Can i exploit johnson noise to violate the second law?
- parsec
- · Replies 1 ·
Graduate Wheeler's delayed choice gedanken experiment
- Bertrand
- · Replies 6 ·
Graduate Understanding the Well-Defined Properties of Quantum Systems
- qtheoryquestion
- · Replies 15 ·