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 How Does Equation 4.144 Follow from 4.143 in Quantum Field Theory?
- Yoran91
- · Replies 10 ·
Graduate What qualifies as an observer in quantum mechanics?
- kostas230
- · Replies 130 ·
Graduate Why does d/dt transform to a partial derivative in the integral?
- Lasha
- · Replies 1 ·
Graduate Schrodinger's Cat vs. The Principle of Explosion
- jason_m
- · Replies 40 ·
Graduate Violation of thermodynamics law
- ajayguhan
- · Replies 3 ·
Graduate Can Amplitudes Be Assigned Between Subspaces in Quantum Mechanics?
- dEdt
- · Replies 1 ·
Graduate Derivation of rayleigh jeans law
- ajayguhan
- · Replies 1 ·
Graduate Is Dirac's Principles of Quantum Mechanics a good way to learn?
- jack476
- · Replies 6 ·
Graduate Physicist disentangles 'Schrodinger's cat' debate
- StevieTNZ
- · Replies 28 ·
Graduate Do particles have discrete energy levels?
- Dammes
- · Replies 6 ·
Graduate How Can We Represent Electron Wave Length in an Equation?
- PhyHunter
- · Replies 2 ·
Graduate What is Avoided crossing or Level repulsion
- sugeet
- · Replies 12 ·
Graduate Can you ever have an odd number of entangled particles?
- Fiziqs
- · Replies 13 ·
Graduate What is the relationship between degeneracy factor and photon polarization?
- ajayguhan
- · Replies 11 ·
Graduate Current standing of qubit research
- Verdict
- · Replies 3 ·
Undergrad Normalisation and normalising wavefunctions
- indeterminate
- · Replies 3 ·
Graduate Many-Body Quantum Field Theory
- dEdt
- · Replies 3 ·
Graduate Eigenstate-to-eigenstate evolution with no intermediate superposition?
- James MC
- · Replies 5 ·
Graduate Experiments directed towards discreteness/continuity
- Kidphysics
- · Replies 1 ·
Graduate Following collapse of the waveform
- rroubaix
- · Replies 1 ·
Graduate Quantum entanglement and computing
- MathJakob
- · Replies 6 ·
Graduate How certain do we have to get about a particle's position ?
- B4ssHunter
- · Replies 1 ·
Graduate Why Does Negative Current Occur in LEDs at Low Voltage?
- Superman234
- · Replies 1 ·
Undergrad Representation of numbers in quantum bits
- Vphysics2013
- · Replies 1 ·
Graduate Need to discuss about quantum concepts
- pattisahusiwa
- · Replies 1 ·
Undergrad Why is there a peak in the visible range?
- MathewsMD
- · Replies 2 ·
Graduate How to go from Heisenberg operators to Schrödinger operators
- snoopies622
- · Replies 10 ·
Undergrad Can Excess Photon Energy Cause an Electron to Jump Energy Levels?
- bloupo
- · Replies 8 ·
Graduate What is the concept of multiple orthogonal time dimensions?
- dakim
- · Replies 12 ·
Graduate Plasma and light atom collision.
- SeanM1990
- · Replies 8 ·
Graduate Question about non-relativistic limit of QFT
- guillefix
- · Replies 3 ·
Graduate What determines an amplitude of a wave particle?
- Goodver
- · Replies 7 ·
Graduate Unitary in quantum field theory
- shuijing
- · Replies 3 ·
Graduate What happens to the freq of a photon after encountering double slit?
- San K
- · Replies 4 ·
Graduate Controlled delayed quantum erasure?
- jarekd
- · Replies 6 ·
Graduate What are the Different Formulations of Quantum Mechanics?
- bolbteppa
- · Replies 88 ·
Undergrad Why introduce matrix in quantum mechanics
- qls
- · Replies 3 ·
Graduate Is Superposition the Explanation for Bell Inequality Violations ?
- Point Conception
- · Replies 1 ·
Graduate Can someone explain the diffraction of electrons through a single hole?
- Goodver
- · Replies 4 ·
Graduate Scalar gravity -Feynman lectures on gravitation
- muppet
- · Replies 4 ·
Graduate Initial conditions in quantum mechanics
- springwave
- · Replies 4 ·
Graduate Quantum Mechanics Practical Scenarios
- Vphysics2013
- · Replies 5 ·
Graduate A question about Qubit (number of states)
- samaaa
- · Replies 6 ·
Undergrad Difference ionic and covalent bonds
- jostpuur
- · Replies 4 ·
Graduate Calculating the amplitude that a particle is spin up
- dEdt
- · Replies 5 ·
Graduate Variational Derivation of Schrodinger Equation
- bolbteppa
- · Replies 6 ·
Undergrad Is Energy Quantized? - Facts & Explanation
- quawa99
- · Replies 3 ·
Graduate Given a Hamiltonian how do you pick the most convenient Hilbert space?
- golnat
- · Replies 3 ·
Graduate Noether current for exchange symmetry
- Ravi Mohan
- · Replies 8 ·
Graduate Schrodinger Equation for Constrained Particle
- chrisa88
- · Replies 12 ·
Graduate Continuous evolution from 1 eigenstate of O to another O-eigenstate?
- James MC
- · Replies 8 ·
Graduate How does quantum pseudo-telepathy work, as a quantum circuit?
- Strilanc
- · Replies 1 ·
Graduate Understanding Plancks Quanta for Quantum Mechanics
- agonydrum
- · Replies 3 ·
Graduate Infinite Energy: Is Constant Exchange of Photons Possible?
- Lasha
- · Replies 11 ·
Graduate Introductory literature, quantum mechanics
- freddyfish
- · Replies 1 ·
Graduate What do the Ms in ml and ms quantum numbers stand for?
- Stickybees
- · Replies 2 ·
Graduate Understanding Entangled Particles: Is it Possible?
- Learningd
- · Replies 3 ·
Graduate Green's function of the Klein-Gordon operator
- guillefix
- · Replies 4 ·
Graduate Planck's Unit and universal constants
- shounakbhatta
- · Replies 5 ·
Graduate NYT review of How the hippies saved physics
- bcrowell
- · Replies 22 ·
Graduate Are Thermal States Always Mixed States?
- camipol89
- · Replies 4 ·
Graduate What are some examples of imperfect entanglement in spin 1/2 systems?
- James MC
- · Replies 3 ·
Graduate Solving QM-like Problem (Shankar, Coupled Mass)
- Astrum
- · Replies 5 ·
Graduate Why does the tensor product in QM produce unentangled states?
- meBigGuy
- · Replies 7 ·
Graduate Velocity of alpha particle within nucleus
- sunrah
- · Replies 3 ·
Graduate How can I present my new atomic model to the scientific community?
- jerryscan
- · Replies 7 ·
Graduate Pasting polarized lenses to a PBS ?
- Zafa Pi
- · Replies 2 ·
Graduate Black body radiation and maximum spectral density
- fede.na
- · Replies 1 ·
Graduate Why Is a Given State an Eigenstate of Field Operators in Quantum Field Theory?
- chientewu
- · Replies 5 ·
Graduate Increasing intensity causes a contradiction in classical physics?
- Turion
- · Replies 2 ·
Graduate How Does Δml=0 and Δl=±1 Apply in Quantum Mechanics?
- pluspolaritons
- · Replies 2 ·
Graduate Linear to Circular Polarisation Questions
- StevieTNZ
- · Replies 1 ·
Graduate Is there really such a thing as a definite state?
- Albert V
- · Replies 5 ·
Graduate Tensor techniques in $3\otimes\bar 3$ representation of su(3)
- lennyleonard
- · Replies 7 ·
Graduate What is the relationship between frequency and wave function?
- phyky
- · Replies 1 ·
Graduate Quantum Computing: How Fast Could It Go?
- Big-Daddy
- · Replies 2 ·
Graduate Why does the Klein-Gordon propagator have a negative i in the exponential?
- guillefix
- · Replies 2 ·
Graduate Three-Particle Quantum Nonlocality under Strict Locality Conditions
- DrChinese
- · Replies 3 ·
Undergrad Compton vs photoelectric effect.
- A Dhingra
- · Replies 4 ·
Graduate Maximizing Time and Energy: Prioritizing QM Topics for Novice Learners
- Jeffrey Yang
- · Replies 1 ·
Graduate Hidden variables - Bell - The Law of Malus?
- Zafa Pi
- · Replies 1 ·
Graduate Entanglement Between Photons that have Never Coexisted
- DrChinese
- · Replies 47 ·
Graduate How Do Infinite and Finite Light Sources Produce Different Wavefront Shapes?
- Kehsibashok
- · Replies 2 ·
Graduate How Do Entangled Particles Communicate Faster Than Light?
- kavonkazem
- · Replies 4 ·
Graduate Heisenberg uncertainty principle and wavelength of light
- geoduck
- · Replies 4 ·
Graduate Computing Wigner D-Matrices: Contradiction Found
- sale
- · Replies 1 ·
Graduate Quantum entanglement as a higher dimension arc?
- conete
- · Replies 2 ·
Graduate Why does the propagator converge?
- geoduck
- · Replies 2 ·
Graduate Rydberg Blockade: Questions on Using for Single Photon Creation
- Xyius
- · Replies 2 ·
Graduate What is conserved in the various forms/types of entanglement?
- San K
- · Replies 11 ·
Graduate Delayed Choice Quantum Eraser communication
- gespex
- · Replies 5 ·
Undergrad Radiation Vectors: Wave Direction After Electron Energy Shift?
- jacassidy2
- · Replies 2 ·
Graduate Wave function collapse in curved spacetime
- atyy
- · Replies 9 ·
Graduate Understand the idea of superposition
- Fiziqs
- · Replies 3 ·
Graduate Preparing entangled states, how is this possible in the simpest cases?
- James MC
- · Replies 11 ·
Graduate Are fermions truly antisymmetric in their wave function?
- Sivasakthi
- · Replies 15 ·
Graduate Can we look upon entanglement as measurement?
- Albert V
- · Replies 3 ·
Graduate Proton Decay- What happens to the proton after too many decays ?
- Curious_Dude
- · Replies 2 ·
Undergrad Lorentz,gallilean transformation
- Kehsibashok
- · Replies 1 ·
Graduate Measuring Plank's constant with LED's
- resurgance2001
- · Replies 4 ·