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 Retrocausality in quantum field theory and experimental tests
- Buzz Bloom
- · Replies 21 ·
Graduate Similarity in form of time-evolution and Gibbs weight?
- muscaria
- · Replies 1 ·
Undergrad Solving for <E^2> of a non-stationary state of the QSHO
- hnicholls
- · Replies 1 ·
Undergrad Does a field operator always commute with itself?
- Frank Castle
- · Replies 2 ·
High School The Dirac equation and the spectrum of the hydrogen atom
- Sophrosyne
- · Replies 10 ·
Undergrad Bell's Inequality is only valid for non-negative numbers
- harpo
- · Replies 2 ·
High School Can quantum entanglement transmit information faster than light?
- Dr Wu
- · Replies 2 ·
Undergrad Just what is information, and what is its place in Nature
- plschwartzx
- · Replies 17 ·
High School Double-slit experiment observed by split brain
- Bojan Keevill
- · Replies 9 ·
Graduate Dyson's Formula from Tong's lecture notes
- noir1993
- · Replies 19 ·
High School How does quantum entanglement protect a key?
- gnnmartin
- · Replies 4 ·
Undergrad Why does de Broglie wavelength decrease with momentum if matter isn't a wave?
- Blue Scallop
- · Replies 41 ·
Undergrad What does it mean to span the Bloch sphere?
- PieroC
- · Replies 4 ·
Undergrad Unruh effect in full spacetime
- gerald V
- · Replies 5 ·
Undergrad Relationship between negative mass, energy and antimatter
- martin25p2
- · Replies 10 ·
Undergrad Fourier transform and locality/uncertainty
- bznm
- · Replies 6 ·
Graduate Field strength measurement and continuity
- hilbert2
- · Replies 8 ·
Undergrad Proving the Pauli matrix identity for Poincaré group representations
- formodular
- · Replies 9 ·
Undergrad Why does "wave particle duality" not exist anymore?
- Dadface
- · Replies 39 ·
Undergrad How do electrons impact the probability of fusion in a non-plasma fluid system?
- Aidan Davis
- · Replies 1 ·
Undergrad Using measurement to extract energy?
- nashed
- · Replies 1 ·
Graduate Srednicki's normalization choice for lie algebra generators
- hideelo
- · Replies 1 ·
Undergrad Frustrated spontaneous emission
- Trollfaz
- · Replies 8 ·
High School Classical physics emerging from quantum physics
- Andrew Wright
- · Replies 6 ·
Graduate Scalar Fields with the Same Mass
- hilbert2
- · Replies 2 ·
Undergrad Why does the Dirac Hamiltonian go negative with antiparticle operators?
- Silviu
- · Replies 4 ·
High School Physical significance of wave function
- Wrichik Basu
- · Replies 4 ·
Graduate Quantum telescope (different meaning)
- nic30
- · Replies 1 ·
Undergrad Do Pions Exist Naturally in High Z Nuclei and How Do Their Half Lives Change?
- Kevin McHugh
- · Replies 4 ·
Undergrad Are any electrons ejected below the threshold frequency?
- lawlieto
- · Replies 4 ·
High School Do Instantaneous Reactions Imply Infinite Speed in Quantum Entanglement?
- Deepak K Kapur
- · Replies 17 ·
Graduate Forming a unitary operator from measurement operators
- Danny Boy
- · Replies 2 ·
High School If quantum particles can move to other universes, can macroscopic things move?
- TheQuestionGuy14
- · Replies 4 ·
Undergrad Particle has certain energy levels in a potential well?
- nickhobbs
- · Replies 4 ·
High School How does entanglement occur at such incredible speeds?
- Lunct
- · Replies 10 ·
High School Does measurement interaction cause the uncertainty principle?
- victorhugo
- · Replies 11 ·
Graduate How can quantum mechanics contribute in a Nuclear reactor
- madhisoka
- · Replies 10 ·
High School Is momentum in atoms part of the potential energy?
- mieral
- · Replies 17 ·
High School What is the wave function for a single electron?
- Quandry
- · Replies 11 ·
Undergrad Creation operator and Wavefunction relationship
- DeathbyGreen
- · Replies 6 ·
High School How do we know some particles don't exist until measured?
- Lunct
- · Replies 70 ·
High School How Precise Can QED Predict the Motion of Charged Particles?
- goran d
- · Replies 3 ·
Graduate Problem about Kohn Hohenberg theorem
- georg gill
- · Replies 3 ·
High School How is the Schrodinger Equation used in calculating forces of nature?
- mieral
- · Replies 28 ·
Undergrad Does the wave function collapse if a measurement is made but unobserved?
- PotentialReasoning
- · Replies 4 ·
Undergrad Is the Joint-State of Alice and Bob's Instruments Separable in Spacetime?
- Eye_in_the_Sky
- · Replies 35 ·
Undergrad Difference between field and wave equation
- Silviu
- · Replies 8 ·
Undergrad Is teleportation possible through quantum entanglement?
- STAR GIRL
- · Replies 2 ·
High School Is Decoherence Enough to Solve the Measurement Problem in Wave-Particle Duality?
- Jman091
- · Replies 5 ·
High School Question on the Bohr atomic model and energy
- physics user1
- · Replies 2 ·
Graduate Deriving total energy in a Hydrogen molecule
- fisher garry
- · Replies 2 ·
Undergrad Calculate the energy of the electron in a non-H like atom
- jorgeha
- · Replies 6 ·
High School Does detecting one slit in the double slit experiment show entanglement?
- Trollfaz
- · Replies 8 ·
High School Is it possible for any wave to be in a complex of waves?
- Gary Smith
- · Replies 8 ·
Undergrad How electrons move in subatomic world?
- Quantum Velocity
- · Replies 6 ·
Graduate Simple way to create entangled photon pairs?
- Cleber
- · Replies 21 ·
Undergrad How can an atom reach less than absolute zero?
- Quantum Velocity
- · Replies 35 ·
Undergrad Why doesn't mirror momentum transfer reveal photon path in Mach-Zehnder interferometer?
- greypilgrim
- · Replies 9 ·
Graduate Calculate the moment of inertia of H with the probability from wavefunction
- fisher garry
- · Replies 8 ·
Undergrad Forms of the Uncertainty Principle
- Thejas15101998
- · Replies 10 ·
Undergrad Mainstream quantum physics and consciousness
- Gary Smith
- · Replies 7 ·
Insights Entanglement entropy in quantum mechanics
- ShayanJ
- · Replies 22 ·
Undergrad Does measurement affect decay rate without interacting with the atom?
- Trollfaz
- · Replies 22 ·
Undergrad QM: Measurement & Wave Function Change
- Silviu
- · Replies 42 ·
Undergrad Why physics cannot explain what matter is in itself
- Gary Smith
- · Replies 1 ·
Graduate Is the overlap of coherent states circular symmetric?
- Danny Boy
- · Replies 1 ·
High School Can a particle be in two entanglements at the same time?
- Lunct
- · Replies 3 ·
High School What are the practical applications of QM and QFT?
- mieral
- · Replies 3 ·
High School Unanswered questions of quantum physics
- Gary Smith
- · Replies 2 ·
Undergrad Are special relativity rules encoded in the Dirac equation?
- raeed
- · Replies 1 ·
Undergrad Satellite based entanglement over 1200 km
- Auto-Didact
- · Replies 1 ·
Insights Entanglement Entropy – Part 2: Quantum Field Theory - Comments
- ShayanJ
- · Replies 3 ·
High School Simple intro about Schrödinger's cat metaphor
- houlahound
- · Replies 2 ·
Undergrad How can the total orbital angular momentum be zero?
- steve_a
- · Replies 28 ·
Graduate Using feedback in quantum measurements
- Johny Boy
- · Replies 7 ·
Undergrad Does measuring an alpha particle affect an entangled daughter nucleus?
- Trollfaz
- · Replies 3 ·
Graduate What are the probabilities of multiverses?
- Bibatshu Thapa
- · Replies 3 ·
High School What do physicists mean by the wave function being ontic or real?
- fanieh
- · Replies 10 ·
Graduate Bohr's solution to the EPR paradox
- PGaccount
- · Replies 100 ·
Undergrad Kinetic and Potential energy operators commutation
- Dinara
- · Replies 14 ·
Undergrad Photosynthesis and quantum randomness
- Atla2017
- · Replies 2 ·
Undergrad Does measurement change the energy of a system?
- arpon
- · Replies 2 ·
Undergrad Quantum mechanics and gravity of Greenberger
- exponent137
- · Replies 5 ·
Undergrad The symmetry argument and expectation value
- i_hate_math
- · Replies 6 ·
High School Why does lacking a position observable make photons less classical?
- zonde
- · Replies 20 ·
Undergrad Delayed choice experiment affecting the past
- Trollfaz
- · Replies 25 ·
Undergrad Is the Dimensionality of Vector Spaces the Same for Different Quantum States?
- arpon
- · Replies 1 ·
High School Are wave functions more real than state vectors in Hilbert space?
- fanieh
- · Replies 38 ·
Undergrad Is Wave-Particle Duality Still Relevant in Modern Physics?
- Dadface
- · Replies 90 ·
Undergrad Why is E not equal to p^2/2m for a particle in a box?
- Happiness
- · Replies 73 ·
High School What kind of difference would particles have?
- Lunct
- · Replies 10 ·
Undergrad Questions on Black Hole Entanglement and ER-Bridges
- Jaydwill10
- · Replies 12 ·
Undergrad Understanding QM Proof: Wavefunction in Orthonormal Eigenfunctions
- Silviu
- · Replies 3 ·
Undergrad Many measurements are not covered by Born's rule
- A. Neumaier
- · Replies 96 ·
High School Wave-particle-duality and the evolution of the universe
- Akriel
- · Replies 17 ·
Undergrad How a particle localized in half of a box changes over time
- Happiness
- · Replies 20 ·
Undergrad Size of an electron and Planck Volume.
- Arman777
- · Replies 12 ·
Undergrad Can superdense coding be achieved without quantum memory?
- Armchair
- · Replies 1 ·
High School Does the screen count as an observer in the double slit experiment?
- Trollfaz
- · Replies 3 ·
Undergrad Stationary states (The Bohr hydrogen atom)
- Erenjaeger
- · Replies 1 ·