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 Create Feynman Diagrams online
- magicfountain
- · Replies 2 ·
Graduate Do Lorentz boosts affect spin orientation?
- Zoot
- · Replies 5 ·
Undergrad About the hyperfine energy splitting of a positronium
- S_klogW
- · Replies 1 ·
Graduate Can someone explain what this means please?
- I2004
- · Replies 22 ·
Graduate Uncertainty in some observable A
- CAF123
- · Replies 8 ·
Graduate The quantum state cannot be interpreted statistically?
- inflector
- · Replies 521 ·
Graduate Normalization of step potential eigenfunction
- tamaghnahazra
- · Replies 13 ·
Graduate Spin direction and 4-spinor components
- Zoot
- · Replies 1 ·
Graduate Schrödinger Eq: Neglect Uncertainty Principle? Intensity Probability?
- Mr-T
- · Replies 11 ·
Graduate Quantum Superposition: Does it Apply on a Larger Scale?
- Oral B
- · Replies 12 ·
Graduate Confusion from Weinberg's QFT vol1
- cosmic dust
- · Replies 10 ·
Graduate Question about expectation values.
- cragar
- · Replies 5 ·
Graduate Question re the Information Paradox
- Islam Hassan
- · Replies 4 ·
Graduate Why most observables have real eigenvalues
- aaaa202
- · Replies 9 ·
Graduate Quantum Harmonic Oscillator - Why we limit the bottom end of the ladder
- rajark
- · Replies 7 ·
Graduate Hamiltonian for hydrogen atom?
- cragar
- · Replies 11 ·
Graduate Gross-Pitaevskii equation in Bose Einstein condensates
- alexvas
- · Replies 2 ·
Graduate Quantum Key Distribution confusion.
- Silversonic
- · Replies 1 ·
Graduate Particle Annihilation in Interacting Fields: Frequency and Bound State Quanta
- I2004
- · Replies 10 ·
Graduate Analytic continuation to find scattering bound states
- alexvas
- · Replies 2 ·
Graduate Hamiltonian Kinetic Energy Operator
- DiracPool
- · Replies 1 ·
Graduate Does the Observer Affect the Superposition of Quantum Particles?
- QGary
- · Replies 8 ·
Graduate How Does Quantum Entanglement Work?
- Aeropath
- · Replies 17 ·
Graduate How do you know when a set of observables form a CSCO?
- estiface
- · Replies 1 ·
Graduate Odd and even solutions to the SE
- aaaa202
- · Replies 14 ·
Graduate Is the Lowest Possible Spin of Particle p 2 in Decay Scenarios?
- MarkovMarakov
- · Replies 1 ·
Graduate Complex coefficents in density operator expansion?
- center o bass
- · Replies 1 ·
Graduate Does it matter which eigenvectors
- aaaa202
- · Replies 5 ·
Graduate Particle in a box and Heisenberg Uncertainty principle paradox?
- Boorglar
- · Replies 3 ·
Graduate Where do external photon terms go in Feynman diagram term ordering?
- spacelike
- · Replies 2 ·
Graduate Lagrangian vs. Hamiltonian in QFT
- copernicus1
- · Replies 3 ·
Graduate Can particles be entangled on any property having more than two states?
- San K
- · Replies 4 ·
Graduate Why the Antisymmetry of Wavefunction for l = 1?
- c299792458
- · Replies 1 ·
Graduate Are Protons and Nuclei Transitioning Between Spin States in NMR and MRI?
- bladesong
- · Replies 2 ·
Graduate Hey guys,I have to admit that my knowledge of this stuff is
- PhiPhenomenon
- · Replies 3 ·
Graduate The universe from the point of vew of a photon ?
- laudas
- · Replies 6 ·
Graduate Negative energy in the Schrödinger equation
- aaaa202
- · Replies 7 ·
Graduate What Causes the Attraction Between Charged Particles?
- ParticleBane
- · Replies 30 ·
Graduate Quantum Computing and the Infinite Salesmen Problem
- Mukilab
- · Replies 30 ·
Graduate Creation and Annihilation Operators
- jhosamelly
- · Replies 2 ·
Graduate Fair Sampling Loophole now closed for Photons
- DrChinese
- · Replies 21 ·
Graduate Second Quantization for Fermions: Creation Operator
- jhosamelly
- · Replies 6 ·
High School Is it true that you are never actually touching something?
- physicsnoob12
- · Replies 67 ·
Graduate Bosonic condensation in 1 spatial dimension
- JK423
- · Replies 5 ·
Graduate Quantum-Classical limit of Zonal Harmonics
- "pi"mp
- · Replies 2 ·
Graduate QM: Understanding Quantization Axis for 2-Level Atoms
- Niles
- · Replies 1 ·
Undergrad Help Me Master the G-Factor: A Serway's Modern Physics Guide
- JJHK
- · Replies 4 ·
Graduate Lagrangian density for a complex scalar field (classical)
- Trave11er
- · Replies 4 ·
Graduate Can Perfect White Light Consist of Only Out-of-Phase Photons Resulting in Black?
- Edi
- · Replies 2 ·
Undergrad What Does Wave-Particle Duality Mean for Electrons?
- einstein1921
- · Replies 7 ·
Graduate Identity Operator: Vector Expressions in Basis A
- aaaa202
- · Replies 3 ·
Graduate How does abstract algebra relate to canonically conjugate in physics?
- nateHI
- · Replies 1 ·
Graduate Quantum Zeno Effect - Explained
- daisey
- · Replies 8 ·
Undergrad Protons and neutrons the same mass?
- Sarask
- · Replies 2 ·
Graduate 3-Qubit Quantum Circuit with 1 CNOT
- jumi
- · Replies 1 ·
Graduate Is Lucid Dreaming the Key to Unlocking Quantum Machine Learning?
- Heilsin
- · Replies 6 ·
Graduate Splitting light into colors, mathematical expression (fourier transforms)
- FordDJ22
- · Replies 4 ·
Graduate Energy-Time Uncertainty Relation
- harjyot
- · Replies 1 ·
Graduate Free Particle in No Potential: Explained Intuitively
- aaaa202
- · Replies 6 ·
Undergrad What is the evidence for light being particles instead of waves?
- CLourensS
- · Replies 33 ·
Graduate Question about expectation value.
- cragar
- · Replies 3 ·
Graduate Quantum Mechanics & Superposition State Dynamics
- einstein1921
- · Replies 3 ·
Graduate Why not formulate QM in terms of |ψ| squared?
- Tosh5457
- · Replies 30 ·
Graduate Three Papers on the Foundations of Evolution and Emergence by Diederik Aerts
- John86
- · Replies 1 ·
Graduate Why do entangled particles have to be in an indeterminate state?
- San K
- · Replies 5 ·
Graduate Green's function & Klein Gordon
- Sekonda
- · Replies 1 ·
Graduate Entanglement and the Pauli exclusion principle
- lotm
- · Replies 2 ·
Graduate Is Entropy Reduced When Particles Combine?
- LarryS
- · Replies 6 ·
Graduate Energy-time Uncertainty principle
- dev70
- · Replies 1 ·
Graduate Physical meaning of Differential Cross Section in scattering
- Fizicks1
- · Replies 2 ·
Graduate Loophole-free demonstration of nonlocality?
- bohm2
- · Replies 36 ·
Graduate The Role of Commutators and Poisson Brackets in Phase Space Geometry
- aaaa202
- · Replies 3 ·
Graduate Why Do I Struggle to Understand Complex Physics Concepts?
- jim77
- · Replies 5 ·
Graduate The expectation value in quantum theory
- aaaa202
- · Replies 2 ·
Graduate Solving Doubled Spring Constant in Harmonic Oscillator
- aaaa202
- · Replies 9 ·
High School Why the central fringe is brighter in the double slit experiment
- jaumzaum
- · Replies 4 ·
Graduate What is the significance of macro entanglement in quantum mechanics?
- benjayk
- · Replies 7 ·
Graduate Combined system state as product of states
- Sekonda
- · Replies 7 ·
Graduate Why photon loss energy when escape from a black hole ?
- big_bounce
- · Replies 2 ·
Graduate Bohr's response to the Einstein box
- Loro
- · Replies 8 ·
Graduate Orgin of charge and magnetic character
- dev70
- · Replies 1 ·
Graduate Is it possible hf=kT? Conditions Explained
- phyky
- · Replies 3 ·
Graduate What Are the Degrees of Freedom for an Electron?
- dev70
- · Replies 20 ·
Graduate Degeneracy for different energy states in Infinite cubic well
- Chelsea S
- · Replies 9 ·
Graduate Finding the ground state energy of a particle
- sandybeach
- · Replies 3 ·
Graduate One loop integration evaluation
- Sekonda
- · Replies 12 ·
Graduate Exploring the Topological Cross Section in Experimental Quantum Physics
- cfar
- · Replies 8 ·
Graduate What happens if you take two quantum entangled particle and
- MilesStandish
- · Replies 11 ·
Graduate Does Decoherence Solve the Measurement Problem Completely
- Prathyush
- · Replies 88 ·
Graduate Understanding Spin 1/2 and Other Spin Values Explained
- Tonywryip
- · Replies 2 ·
Undergrad What is spin and why does is particle emission possible
- Sharpe27
- · Replies 8 ·
Graduate Can I Use the EOM to Simplify an Interaction Term in Feynman Diagrams?
- jfy4
- · Replies 10 ·
Graduate How many tree-levels in various QED processes
- Lapidus
- · Replies 3 ·
Graduate Describing polarization of a coheret state parametrizing on poincare sphere
- TheBlackNinja
- · Replies 1 ·
Undergrad Oscillator Strength: What Is It & How To Understand It
- hanisan
- · Replies 1 ·
Graduate How to Calculate Expectation Values in Spherical Coordinates?
- M. next
- · Replies 1 ·
Graduate Aharonov-Bohm Effect & Spin 1/2 Particles
- cragar
- · Replies 4 ·
Graduate Defeated by quantum field theory yet again
- HomogenousCow
- · Replies 28 ·
Graduate Help explaining a quantum wave function. (How you describe a wave by a particle)
- nukeman
- · Replies 20 ·
Graduate Solving Problems Using Quantum Mechanics
- bgq
- · Replies 13 ·