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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.

Quantum Interpretations and Foundations

A question about quantum entanglement
Graduate Hamiltonian for hydrogen atom?
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Graduate Gross-Pitaevskii equation in Bose Einstein condensates
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Graduate Quantum Key Distribution confusion.
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Graduate Particle Annihilation in Interacting Fields: Frequency and Bound State Quanta
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Graduate Analytic continuation to find scattering bound states
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Graduate Hamiltonian Kinetic Energy Operator
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Graduate Does the Observer Affect the Superposition of Quantum Particles?
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Graduate How Does Quantum Entanglement Work?
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Graduate How do you know when a set of observables form a CSCO?
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Graduate Odd and even solutions to the SE
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Graduate Is the Lowest Possible Spin of Particle p 2 in Decay Scenarios?
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Graduate Complex coefficents in density operator expansion?
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Graduate Does it matter which eigenvectors
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Graduate Particle in a box and Heisenberg Uncertainty principle paradox?
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Graduate Where do external photon terms go in Feynman diagram term ordering?
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Graduate Lagrangian vs. Hamiltonian in QFT
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Graduate Can particles be entangled on any property having more than two states?
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Graduate Why the Antisymmetry of Wavefunction for l = 1?
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Graduate Are Protons and Nuclei Transitioning Between Spin States in NMR and MRI?
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Graduate Hey guys,I have to admit that my knowledge of this stuff is
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Graduate The universe from the point of vew of a photon ?
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Graduate Negative energy in the Schrödinger equation
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Graduate What Causes the Attraction Between Charged Particles?
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Graduate Quantum Computing and the Infinite Salesmen Problem
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Graduate Creation and Annihilation Operators
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Graduate Fair Sampling Loophole now closed for Photons
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Graduate Second Quantization for Fermions: Creation Operator
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High School Is it true that you are never actually touching something?
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Graduate Bosonic condensation in 1 spatial dimension
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Graduate Quantum-Classical limit of Zonal Harmonics
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Graduate QM: Understanding Quantization Axis for 2-Level Atoms
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Undergrad Help Me Master the G-Factor: A Serway's Modern Physics Guide
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Graduate Lagrangian density for a complex scalar field (classical)
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Graduate Can Perfect White Light Consist of Only Out-of-Phase Photons Resulting in Black?
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Undergrad What Does Wave-Particle Duality Mean for Electrons?
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Graduate Identity Operator: Vector Expressions in Basis A
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Graduate How does abstract algebra relate to canonically conjugate in physics?
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Graduate Quantum Zeno Effect - Explained
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Undergrad Protons and neutrons the same mass?
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Graduate 3-Qubit Quantum Circuit with 1 CNOT
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Graduate Is Lucid Dreaming the Key to Unlocking Quantum Machine Learning?
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Graduate Splitting light into colors, mathematical expression (fourier transforms)
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Graduate Energy-Time Uncertainty Relation
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Graduate Free Particle in No Potential: Explained Intuitively
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Undergrad What is the evidence for light being particles instead of waves?
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Graduate Question about expectation value.
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Graduate Quantum Mechanics & Superposition State Dynamics
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Graduate Why not formulate QM in terms of |ψ| squared?
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Graduate Three Papers on the Foundations of Evolution and Emergence by Diederik Aerts
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Graduate Why do entangled particles have to be in an indeterminate state?
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Graduate Green's function & Klein Gordon
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Graduate Entanglement and the Pauli exclusion principle
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Graduate Is Entropy Reduced When Particles Combine?
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Graduate Energy-time Uncertainty principle
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Graduate Physical meaning of Differential Cross Section in scattering
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Graduate Loophole-free demonstration of nonlocality?
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Graduate The Role of Commutators and Poisson Brackets in Phase Space Geometry
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Graduate Why Do I Struggle to Understand Complex Physics Concepts?
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Graduate The expectation value in quantum theory
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Graduate Solving Doubled Spring Constant in Harmonic Oscillator
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High School Why the central fringe is brighter in the double slit experiment
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Graduate What is the significance of macro entanglement in quantum mechanics?
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Graduate Combined system state as product of states
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Graduate Why photon loss energy when escape from a black hole ?
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Graduate Bohr's response to the Einstein box
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Graduate Orgin of charge and magnetic character
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Graduate Is it possible hf=kT? Conditions Explained
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Graduate What Are the Degrees of Freedom for an Electron?
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Graduate Degeneracy for different energy states in Infinite cubic well
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Graduate Finding the ground state energy of a particle
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Graduate One loop integration evaluation
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Graduate Exploring the Topological Cross Section in Experimental Quantum Physics
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Graduate What happens if you take two quantum entangled particle and
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Graduate Does Decoherence Solve the Measurement Problem Completely
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Graduate Understanding Spin 1/2 and Other Spin Values Explained
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Undergrad What is spin and why does is particle emission possible
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Graduate Can I Use the EOM to Simplify an Interaction Term in Feynman Diagrams?
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Graduate How many tree-levels in various QED processes
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Graduate Describing polarization of a coheret state parametrizing on poincare sphere
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Undergrad Oscillator Strength: What Is It & How To Understand It
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Graduate How to Calculate Expectation Values in Spherical Coordinates?
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Graduate Aharonov-Bohm Effect & Spin 1/2 Particles
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Graduate Defeated by quantum field theory yet again
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Graduate Help explaining a quantum wave function. (How you describe a wave by a particle)
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Graduate Solving Problems Using Quantum Mechanics
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Graduate Unruh effect and detectors moving in a circle
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Graduate Having a hard time thinking about quantum mechanical vector addition.
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Undergrad If everything is random how can we have laws?
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Graduate Which symmetry follows Ward-Takahashi identity?
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Graduate Invariance of energy under change of origin
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Graduate Dimensional analysis of the SED
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Graduate How Does the Outer Product Operate on Quantum Mechanical Operators?
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Graduate Superposed photon hitting a polarizing beamsplitter
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Graduate Some questions on quantum teleportation
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Graduate Existence of adjoint of an antilinear operaor, time reversal
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Graduate Transforming a 4-vector integration measure
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Undergrad What exactly does a degree of freedom mean?
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Graduate Scattering Amplitude for a given potential
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Graduate Compatible Operators: Same Eigenvalues?
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Graduate How Do Electrons Behave in a Half-Filled P Orbital?
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