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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Undergrad The Schmidt decomposition in QC
- Haorong Wu
- · Replies 5 ·
Undergrad Calculating Momentum Operator Matrix Elements from <φ|dH/dkx|ψ>
- lastItem
- · Replies 1 ·
High School Is spacetime a quantum error correcting code?
- platosuniverse
- · Replies 2 ·
Graduate Counting States / Uncertainty principle
- positron
- · Replies 1 ·
Graduate Rotational energy levels vs l quantum number
- svayl
- · Replies 1 ·
Undergrad How does the Pauli exclusion principle work?
- BillKet
- · Replies 2 ·
High School Does a photon contain a pair of spinning charges?
- FX_physics
- · Replies 9 ·
High School What's causing the "spooky action at a distance?"
- Simple man
- · Replies 7 ·
High School Double Slit experiment and the path of least Action
- sqljunkey
- · Replies 11 ·
High School Is it possible to change a fundamental property of a particle?
- Adhruth Ganesh
- · Replies 15 ·
Graduate Quantum virial and confinement
- DaTario
- · Replies 2 ·
Graduate Pascal Principle with photons in a U tube
- DaTario
- · Replies 2 ·
Graduate Quantum coherence in a gas sample
- DaTario
- · Replies 2 ·
Graduate Why the probabilistic approach is not more prominent in QFT?
- jordi
- · Replies 2 ·
High School How can you ensure that the particle has already been entangled?
- Hououin Kyouma
- · Replies 2 ·
Graduate Van der Waals Interaction
- jhosamelly
- · Replies 1 ·
Graduate Difference between chemical potential, ionization energy, band gap energy, and Fermi level?
- new_986
- · Replies 1 ·
Graduate Can an object be at rest in its own reference frame?
- Grasshopper
- · Replies 8 ·
Graduate Can EM fields exhibit the same energy-momentum tensor as gravitational waves?
- member 11137
- · Replies 2 ·
High School How do we know the electron is not a field of energy?
- deddie
- · Replies 7 ·
Graduate Starting with the Schrodinger equation, how do we find the Hamiltonian matrix?
- lavinia
- · Replies 11 ·
Undergrad Can Compton scattering increase the energy of photons?
- jim421616
- · Replies 1 ·
Graduate I am Imran, a retired Electrical Engineer with a QM question
- ImranM098
- · Replies 1 ·
Graduate Charged particle on a sphere with magnetic dipole at its center
- ShayanJ
- · Replies 2 ·
High School Can Molecules Have Defined Position and Momentum Before Measurement?
- name123
- · Replies 17 ·
Undergrad Why Is My Fourier Transform of a Gaussian Incorrect?
- jaurandt
- · Replies 4 ·
Graduate Flexibility in Grover's Algorithm?
- .Scott
- · Replies 2 ·
Graduate Field screening in the electron
- Pythagorean
- · Replies 2 ·
Graduate What is the hardware for quantum gates?
- nomadreid
- · Replies 4 ·
Graduate Bra-ket notation to Matrix for entangled pairs
- nomadreid
- · Replies 3 ·
Graduate Where does photon interference happen
- zonde
- · Replies 2 ·
Graduate Classical versus quantum information
- nomadreid
- · Replies 2 ·
Graduate Rigorous treatments of double-slit , quantum eraser, etc.
- strangerep
- · Replies 2 ·
Graduate Probability current proportional to density
- Peeter
- · Replies 3 ·
Graduate Heisenberg-Robertson uncertainty relation vs. noise-disturbance measures
- vanhees71
- · Replies 2 ·
Graduate Why is the ground state a coherent state when α=0?
- LagrangeEuler
- · Replies 27 ·
Undergrad What is passive locality ? Bell's Theorem.
- harrylin
- · Replies 2 ·
Graduate Why doesn't an accelerated electron radiate infinitely many photons?
- fluidistic
- · Replies 2 ·
Graduate Partial measurement in quantum eraser with random slit checks
- StevieTNZ
- · Replies 1 ·
Graduate Is Eventum Mechanics the Same as CSL?
- atyy
- · Replies 1 ·
Graduate How to Measure Entangled Photons in the 45/135 Basis with Wave Plates and PBS?
- StevieTNZ
- · Replies 1 ·
Graduate Disturb a complex massive field, apply force ?
- Spinnor
- · Replies 1 ·
Graduate What is entanglement purification and how does it work?
- StevieTNZ
- · Replies 1 ·
Graduate Number of Photons In Each Section
- StevieTNZ
- · Replies 1 ·
Graduate Peculiarities of photons in quantum optics
- Cthugha
- · Replies 1 ·
Graduate Adroit Measurements in Reaching Conclusion
- StevieTNZ
- · Replies 1 ·
Graduate Two complex fields + interaction, conserved current?
- Spinnor
- · Replies 1 ·
Graduate How to graph Dirac equation, some complex numbers?
- Spinnor
- · Replies 1 ·
Graduate Macroscopic quantum effects and gravitational wave detector
- Truecrimson
- · Replies 1 ·
Graduate What Happens to Entangled Photons at a Beam Splitter?
- StevieTNZ
- · Replies 1 ·
Graduate Bruce Rosenblum, author of Quantum Enigma
- StevieTNZ
- · Replies 1 ·
Graduate How Do Wave Plates Influence Photon Entanglement and Measurement?
- StevieTNZ
- · Replies 1 ·
Graduate Evolution of Photons from Bell-States to Separable States
- StevieTNZ
- · Replies 1 ·
Graduate Collapse Models of Quantum Mechanics
- StevieTNZ
- · Replies 1 ·
Graduate Pilot wave without non-locality
- zonde
- · Replies 1 ·
Graduate Quantum Teleportation / Beam Splitters
- StevieTNZ
- · Replies 1 ·
Graduate How Is Mass Generated Dynamically in Quantum Field Theory?
- marlon
- · Replies 1 ·
Graduate 3D phase space of point particle and spinors.
- Spinnor
- · Replies 1 ·
Graduate Majorana equation in Algebra of Physical Space
- Jonathan Scott
- · Replies 1 ·
Graduate Can this classical double-slit experiment duplicate loss of interference?
- JesseM
- · Replies 1 ·
Graduate Proving entropy symmetry in quantum systems with time-reversible laws
- JesseM
- · Replies 1 ·
Graduate Shape-Invariant Potentials in N=2 SUSY QM
- quantumdude
- · Replies 1 ·
Undergrad How does the Pauli exclusion principle apply to general quantum states?
- HomogenousCow
- · Replies 11 ·
Undergrad Why does the Dirac equation lead to spin 1/2?
- Vampyr
- · Replies 8 ·
Undergrad Complete list of Feynman diagrams
- friend
- · Replies 3 ·
Graduate What is a 'Quantum Coherence'?
- TimWilliams87
- · Replies 2 ·
Graduate Path Integral QM: Intro and Forward/Backward Scattering
- grzz
- · Replies 1 ·
High School Bohr's duality paradox 100 years later?
- skewzme
- · Replies 71 ·
Graduate Possible similarity between Classical and Quantum photon definition
- DaTario
- · Replies 1 ·
Undergrad Vector Notation of Quantum States for 2 Qubit System
- MrMuscle
- · Replies 2 ·
Undergrad Pauli exclusion principle and Hermitian operators
- jlcd
- · Replies 15 ·
Graduate Do QED effects make a huge change to the position of the electrons?
- Ali Lavasani
- · Replies 20 ·
Undergrad What happens to entangled particle spin when you measure one without knowing the original?
- remormalise
- · Replies 11 ·
Graduate One Loop Correction to a 4 pt. function in 3 dimensions
- QFT1995
- · Replies 5 ·
Undergrad Expectation value of the occupation number in the FD and BE distributions
- Lebnm
- · Replies 1 ·
Graduate Discrete K-G eq. solutions - problem with integral
- weirdoguy
- · Replies 2 ·
Undergrad Why do Pauli matrices have to be Hermitian and satisfy σ² = I?
- QuasarBoy543298
- · Replies 1 ·
Undergrad Could the probability distribution itself be quantised?
- Robert Webb
- · Replies 1 ·
High School Can Electrical Repulsion Distort Electron Orbits in Atoms?
- arupel
- · Replies 3 ·
High School Do Entangled Photons React to possible Photon-Photon Collisions?
- Joseph1785
- · Replies 4 ·
Graduate Why is Spin-Orbit Coupling Important in Understanding Quantum Systems?
- oddiseas
- · Replies 1 ·
Graduate Transition in LS-coupling confusion
- joris_pixie
- · Replies 1 ·
Graduate Alternative linear comb. to vizualize hydrogenic orbitals p,d etc
- psand
- · Replies 1 ·
Graduate Solutions to the TISE for unbound states
- trelek2
- · Replies 1 ·
Graduate Molecular States, Symmetry and Allowed Transitions
- tomothy
- · Replies 1 ·
Undergrad How to understand the Bloch sphere in the quantum computation?
- Haorong Wu
- · Replies 2 ·
Graduate Query about an article on quantum synchronization
- Danny Boy
- · Replies 1 ·
Undergrad Hamiltonian in QM for QFT forces/fields effects
- jlcd
- · Replies 26 ·
Undergrad Kim's 1999 delayed-choice quantum eraser experiment
- skewzme
- · Replies 23 ·
Graduate Does there exist a super-quantum correlation in mixed-state formalism
- jk22
- · Replies 3 ·
Graduate Which operator corresponds to the Green function in QFT?
- jordi
- · Replies 11 ·
Graduate What is the relationship between QFT and QM?
- jordi
- · Replies 34 ·
Graduate Why "Green's function" is used more than "correlations" in QFT?
- jordi
- · Replies 5 ·
Graduate No hidden variables in QM - a paradigm shift?
- Pleonasm
- · Replies 5 ·
Undergrad Eigenstates and repeated measurements
- jlcd
- · Replies 5 ·
Graduate How does Bell's 1964 theorem address detector independence and local realism?
- Dfpolis
- · Replies 18 ·
High School What Is the Role of Density Matrices in Describing Quantum Mixtures?
- jk22
- · Replies 4 ·
Graduate The line between quantum and large scale objects
- bassplayer142
- · Replies 1 ·
High School Why does Bell state measurement in Proietti 2019 create entanglement?
- Joao
- · Replies 1 ·
High School Can superposition be attained for multiple states at once?
- Grinkle
- · Replies 3 ·