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 FAQ - Do Photons Move Slower in a Solid Medium?
- Usaf Moji
- · Replies 8 ·
Graduate Simulate Light Not Polarized Using Jones Formalism
- gandalf215
- · Replies 6 ·
Graduate Is thermal noise truly random in quantum physics?
- countrymac
- · Replies 4 ·
Graduate Field operators - how do they work?
- erkokite
- · Replies 6 ·
Graduate What is the significance of parity in group theory?
- xylai
- · Replies 2 ·
Graduate What Is the Cardinality of Bloch Waves in Quantum Mechanics?
- jostpuur
- · Replies 1 ·
Graduate How Do You Compute Non-Integer Powers of Quantum Operators?
- nicksauce
- · Replies 11 ·
Graduate Feynman's perspective on the double slit
- zwest135
- · Replies 11 ·
Undergrad Do individual photons refract when passing through glass?
- jostpuur
- · Replies 2 ·
Undergrad What is the Pauli exclusion principle?
- supernovae
- · Replies 3 ·
Graduate Finding Eigenvalues of Dirac Matrices with Constraint Conditions
- waht
- · Replies 2 ·
Graduate Stark Effect using first order variation theory.
- scorpion990
- · Replies 2 ·
Undergrad Black Body Radiation: Why Maintaining Constant Temp?
- Amith2006
- · Replies 2 ·
Graduate Massless Schrödinger equation
- Orion1
- · Replies 27 ·
Graduate Is the Entropy of the Universe Zero? Entropy as Entanglement)
- jambaugh
- · Replies 10 ·
Graduate Lagrangians in Quantum Mechanics
- lugita15
- · Replies 2 ·
Graduate Can Random Symmetry Breakings Explain Quantum Oddities?
- djeitnstine
- · Replies 2 ·
Graduate Do protons and neutrons have a wavefunctions?
- Quantom
- · Replies 3 ·
Undergrad What Happens to Matter if Electron Orbit Speed is Slowed?
- foremanator
- · Replies 2 ·
Graduate Does Schrodinger's Cat Qualify as an Observer in Quantum Mechanics?
- dgorman
- · Replies 24 ·
Graduate Negative energy in Dirac equation
- kahoomann
- · Replies 1 ·
Graduate Electromagentic Field vs. Gravity Field
- NYSportsguy
- · Replies 12 ·
Graduate What is the purpose of using a potential well to model a particle's confinement?
- Jacky
- · Replies 2 ·
Graduate Understanding Atom Orbital Calculations: Wave Equations, Calculus, and Matrices
- Quantom
- · Replies 5 ·
Graduate Questions on Virtual Particles
- Bobhawke
- · Replies 6 ·
Graduate Hydrino and Inverse Quantum States
- JohnSimpson
- · Replies 3 ·
Graduate The Mach-Zehnder interferometer experiment
- Ciokko
- · Replies 19 ·
Graduate Some Confusion with Path Integrals
- robousy
- · Replies 17 ·
Graduate What is the Significance of Planck's Constant and its Reduced Form?
- nuby
- · Replies 13 ·
High School Spectral Lines - What Determines Their Width?
- Unredeemed
- · Replies 5 ·
Graduate Degenerate matter total energy
- Orion1
- · Replies 15 ·
Graduate How can we reconcile the different vector dimensions in QM equations?
- Bobhawke
- · Replies 2 ·
Graduate Looking for heterostructures articles
- wlzy
- · Replies 2 ·
Graduate Difference between Mixed State and Superposition
- Dragonfall
- · Replies 6 ·
Graduate What is the smallest Quantum of Energy?
- wawenspop
- · Replies 4 ·
Graduate Understanding Orthogonal Integral on Introduction to Quantum Mechanics
- nicksauce
- · Replies 3 ·
Graduate How is the 4-momentum 4-vector defined in relativistic QM?
- pmb_phy
- · Replies 2 ·
Graduate Why do we have the Heisenberg principle?
- epkid08
- · Replies 9 ·
Graduate The physical meaning of Schrödinger's equation
- kahoomann
- · Replies 2 ·
Undergrad Looking for resources to do with energy transfer.
- DeanBH
- · Replies 1 ·
Graduate Solving Shrodinger Eqn for Constrained System: Negative Energy Levels?
- sudabe
- · Replies 3 ·
Graduate What is the relationship between Special Relativity and Quantum Mechanics?
- jordi
- · Replies 22 ·
Graduate Why expectation value of energy differs between two formulas
- GAGS
- · Replies 1 ·
Graduate One-dimensional box of some width with a particle inside
- Domnu
- · Replies 10 ·
Graduate Wave Function Zero At Infinity?
- GAGS
- · Replies 22 ·
Graduate Can Quantum Tunneling Explain the Proton's Energy Source?
- muser
- · Replies 1 ·
Graduate Grover's algorithm on entangled states
- Dragonfall
- · Replies 1 ·
Graduate How close are mankind to creating a quantum computer?
- eextreme
- · Replies 2 ·
Graduate Matter Waves As Standing Waves
- GAGS
- · Replies 2 ·
Graduate Linearity of momentum operator
- nughret
- · Replies 7 ·
Graduate Where does √(p²+m²) come from in Compton effect derivation?
- The_ArtofScience
- · Replies 3 ·
Graduate Graviton energy and frequency/wavelength?
- dougclind
- · Replies 9 ·
Graduate Viruses and Quantum Mechanical Spreading
- Domnu
- · Replies 1 ·
Graduate Probability Wave Function Ψ(r,t): Time Independence
- GAGS
- · Replies 3 ·
Undergrad Why do different frequency EM Waves behave different ?
- JPC
- · Replies 20 ·
Undergrad Trace in statistical mechanics
- rayveldkamp
- · Replies 7 ·
Graduate Uncertainty Principle: Position Uncertainty of Electrons
- GAGS
- · Replies 2 ·
Graduate Separating Hamiltonian functions. Helium atom.
- scorpion990
- · Replies 1 ·
Graduate Total Angular Momentum of Many Particles
- andrewm
- · Replies 1 ·
Graduate How do n-point functions, Feynman diagrams and the S-matrix connect?
- Icosahedron
- · Replies 8 ·
Graduate Self-taught Quantum Field Theory
- Jon2005
- · Replies 40 ·
Graduate Group Theory Q: Deriving (10.80) Detail Calc
- cosmology
- · Replies 1 ·
Graduate Calculating Non-abelian Anomalies: Who Can Do It?
- cosmology
- · Replies 2 ·
Graduate Wave functions and Hilbert space in quantum mechanics
- Unkraut
- · Replies 9 ·
Graduate Shifting Constraints in the Particle in a Box System
- Domnu
- · Replies 1 ·
Graduate Why is the measure d³k invariant under rotation in QFT?
- whynothis
- · Replies 6 ·
Graduate Observation and the Double Slit Expt
- Richter915
- · Replies 7 ·
Graduate Is There a Conflict Between Quantum Entanglement and Special Relativity?
- Degeneration
- · Replies 19 ·
Graduate Does a Static Charge in a Classical Field Constantly Lose Energy?
- Bobhawke
- · Replies 13 ·
Graduate The Photoelectric Effect, Photon Duality, and The Double-Slit Experiment
- uby
- · Replies 5 ·
Graduate Does Quantum Mechanics Apply to All Scales of Reality?
- Bobhawke
- · Replies 16 ·
Graduate Quick Braket Questions: A|B> & <B|A
- Domnu
- · Replies 16 ·
Graduate Struggling with Angular Momentum in Spherical Coordinates?
- Domnu
- · Replies 6 ·
Graduate Question regarding Schroedinger's Equation
- Domnu
- · Replies 6 ·
Graduate Can Outcome Counting Replace the Born Rule in Quantum Mechanics?
- straycat
- · Replies 6 ·
Graduate Hamiltonian in terms of ladders, question.
- ballzac
- · Replies 5 ·
Graduate Quantum Network and Quantum Imaging
- di1026
- · Replies 3 ·
Graduate What is the operator for velocity in spherical coordinates?
- Blue_Jaunte
- · Replies 14 ·
Undergrad 2.)energy Density Of Radiations
- GAGS
- · Replies 1 ·
Graduate 3.)tunnel and photoelectric effects
- GAGS
- · Replies 2 ·
Graduate Amplifying probability of measuring a desired outcome from a superposition
- Dragonfall
- · Replies 28 ·
Graduate Can one photon be anywhere in Universe?
- wawenspop
- · Replies 27 ·
Graduate Why can't you measure a specific eigenvalue of a unitary operator?
- Dragonfall
- · Replies 18 ·
Does Light Have Mass? Friend Debate
- offtheleft
- · Replies 6 ·
Graduate Mean lifetime of a particle (quantum)
- K.J.Healey
- · Replies 2 ·
Graduate Abstract Schrödinger's equation in QFT
- ledamage
- · Replies 10 ·
Graduate Can vacuum be considered as excitable medium?
- Mikhail
- · Replies 3 ·
Undergrad Deriving Uncertainties for m and b in Least Squares Method"
- ghery
- · Replies 2 ·
Graduate Spectral Zeta function
- mhill
- · Replies 1 ·
Graduate Why Are Electrons Considered Point Particles in Magnetic Moment Studies?
- sudabe
- · Replies 1 ·
Graduate Operator and Commutor Question
- Domnu
- · Replies 2 ·
Graduate What is the Bessel-Parseval relation and how does it work?
- Domnu
- · Replies 2 ·
Graduate Photoelectric effect: conduction band vs bound electrons in metals
- N00bDaan
- · Replies 1 ·
Graduate Difference equation from the square potential step?
- Domnu
- · Replies 1 ·
Undergrad Show that a wave function is correctly normalised?
- Dream_Theater
- · Replies 4 ·
Graduate Missing square root in Nikolic's formula 26 for vector norm?
- birulami
- · Replies 5 ·
Undergrad How does the Fourier transform work in the free particle case?
- Domnu
- · Replies 3 ·
Graduate QFT and Electrons: Is Instantaneous Orbital Change Possible?
- maverick_starstrider
- · Replies 6 ·
Graduate Understanding "Borrowed Energy" in Quantum Mechanics
- leftyguitarjo
- · Replies 1 ·
Graduate Strange definition of regularization of Operators
- mhill
- · Replies 4 ·