Quantum Physics Forum

Post thread
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

I Question about discussions around quantum interpretations
  • Sticky
Insights A Beginner Physics Guide to Baryon Particles
Replies
7
Views
9K
  • Sticky
Insights The 7 Basic Rules of Quantum Mechanics
2
Replies
70
Views
22K
  • Sticky
Insights What is the Anatomy of Compton Scattering?
Replies
2
Views
7K
  • Sticky
B Guidelines for Quantum Physics Forum
Replies
0
Views
8K
I Do ensemble-based predictions truly describe real finite systems?
Replies
3
Views
35
I How strong is the justification for low probability extreme thermal fluctuations?
Replies
6
Views
65
B Is a table levitating possible, even at a minuscule probability?
Replies
32
Views
169
I Energy*time uncertainty for particle decay
Replies
27
Views
176
I Commutation of operators for particle in a box
Replies
16
Views
159
I Need Help on Particle Spin
Replies
3
Views
81
  • Redirect
Book recommendation after Sakurai Modern Quantum Physics
Replies
–
Views
–
I Quantum Entanglement and Synchronization
Replies
6
Views
125
I Electron energy in atoms
Replies
10
Views
225
I Does a qubit break interference in the double slit experiment?
Replies
9
Views
121
A What is the connection between entanglement and the no-cloning theorem?
Replies
1
Views
94
B Two/three photon absorption chemical substance producing photons for electricity generation
Replies
0
Views
61
Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
Replies
7
Views
217
B Quantum entanglement
Replies
1
Views
73
I Quantum behaviour of an electron around a positively charged sphere
Replies
18
Views
266
I Visual depiction of atomic orbitals
Replies
12
Views
253
B Can gravitons be detected?
Replies
28
Views
2K
I Bloch Sphere generalization for more than one qubit
Replies
4
Views
205
I Probabalistic determination Photon Entaglement
Replies
6
Views
110
I Commutator of x and p in quantum mechanics
Replies
4
Views
202
A Physical properties of the vacuum in GR vs. QFT
Replies
15
Views
239
A Confusion about creation/annihilation operators with interaction
Replies
1
Views
144
B Schrödinger's cat question
Replies
6
Views
257
A Eigenstates of the Klein Gordon Field Operator
Replies
8
Views
305
I Direction of time-evolution in time reversed wave functions
Replies
12
Views
384
A Angular momentum uncertainty principle and the particle on a ring
Replies
5
Views
2K
A Effects of perception
Replies
4
Views
159
I Emission probability in blackbody spectrum derivation
Replies
1
Views
169
I Phase and group velocity for the wave function
Replies
14
Views
720
I Validity of identical eigenfunction of commutating operators
Replies
12
Views
241
I Action of an Hermitian unitary operator member of SU(2)
Replies
15
Views
327
I About concept of wave-particle duality
Replies
11
Views
369
I Hydrogen 21 cm line time?
Replies
5
Views
171
A I have some naive questions about Reeh-Schlieder-theorem
Replies
0
Views
181
I I would like some assistance working with commutators
Replies
1
Views
180
I The Extended Wigner's Friend Scenarios
Replies
40
Views
2K
I Shape of wave function (probability distribution) of a single photon
Replies
16
Views
465
I Would gravitons theoretically act like photons?
Replies
18
Views
2K
A Baryon CP Violation Observed at CERN
Replies
7
Views
472
A Geometry Topology and Physics: Nakahara, Chapt. 1: Weyl Ordering
Replies
1
Views
704
B Energy-time uncertainty relation for a volume and macroscopic objects?
Replies
2
Views
380
A What happens when an operator maps a vector out of the Hilbert space?
2
Replies
59
Views
4K
B The wave function of the electron doesn't collapse when passing through air?
Replies
9
Views
1K
I New book on algebraic quantum physics
Replies
6
Views
2K
I A question about density matricies
Replies
7
Views
394
I Density matrix representation of a density operator
Replies
8
Views
1K
I How to understand quantum computers?
Replies
9
Views
2K
I Bose-Einstein statistics and the Photon
Replies
1
Views
837
A Explicit construction of Galilean-invariant space
Replies
1
Views
745
I Addition of angular momenta
Replies
1
Views
448
I Quantum decoherence vs. measurement process
Replies
3
Views
352
I Quantum eraser experiment
Replies
3
Views
437
A Can scattering experiment be used to determine location and momentum of an electron?
Replies
2
Views
279
Insights Quantum Computing for Beginners
Replies
19
Views
4K
I Bob and Alice with a Bell pair
Replies
3
Views
415
B Gravitons vs photons: Does the size of the atom make any difference?
Replies
3
Views
892
I What's the deal with instantons?
Replies
1
Views
386
I How to derive orbital angular momentum of spins in quantum mechanics?
Replies
2
Views
454
I Deriving Bogoliubov transformations correctly
Replies
12
Views
1K
I Dirac's 1972 Boston talk on Projective geometry in quantum mechanics
Replies
7
Views
545
B Feynman QED Questions
Replies
15
Views
1K
A Scattering cross section between charged particle and magnetic moment
Replies
1
Views
408
I More information on the momentum eigenstate in the position basis
Replies
1
Views
527
I Measurement problem - will this work?
Replies
4
Views
2K
I Quantum wavelength in gravitation
Replies
6
Views
650
A Pauli–Villars ghost fields?
Replies
8
Views
748
A Magnetic field produced by moving charge in operator form
Replies
14
Views
1K
I Tensor products and simultaneous eigenstates
Replies
1
Views
537
I Molecular Quantum Computer Progress
Replies
1
Views
2K
I Coherence time for repeated spin measurements
Replies
9
Views
1K
A John Bell 1964 toy model for spin
Replies
3
Views
667
B Thought experiment: Beyond the slowest measurable speed?
Replies
20
Views
998
I Black Hole Fermion Count
Replies
1
Views
759
I Free Schroedinger equation: time separation
Replies
3
Views
685
I I would like an explanation of these extra energy states
Replies
3
Views
778
A Causality in QFT
Replies
18
Views
1K
B General question about series limits and strong lines of the emissions spectrum
Replies
4
Views
1K
A Time Reversal and initial conditions
Replies
8
Views
828
I Choice of basis in BB84 protocol
Replies
2
Views
684
I Time dependent Hamiltonian and energy
Replies
2
Views
742
I I want to understand how the transmission coefficient is obtained
Replies
3
Views
761
I Postulate of only time dependence on |ψ⟩
Replies
2
Views
742
I When is Â(r) Ψ(r) = ⟨r | Â | Ψ⟩?
Replies
2
Views
816
I A short attenuated laser pulse, LIGO, and a fast detector
Replies
1
Views
754
I Using a single particle as quantum computer
Replies
8
Views
864
B Bell's Inequalities and the issue of non-locality
2
Replies
59
Views
6K
I Mean values of observables
Replies
2
Views
958
A Bell's inequality and experiment
Replies
8
Views
849
I States and observables in quantum mechanics
Replies
5
Views
907
I Passing information faster than speed of light
Replies
20
Views
1K
I Energy and momentum in quantum mechanics
Replies
8
Views
1K
B Double-slit with movable detector screen
Replies
15
Views
1K
I QED replacing photon field with current in 3-point function
Replies
1
Views
935
I Expansion of position kets in terms of angular momentum
Replies
5
Views
857
B About the nature of the Newtonian gravitational formula
Replies
7
Views
887
A Numerical implementation of creation and annhilation operators in the SSH model
Replies
0
Views
679
I Particle field strength and sensitivity
Replies
0
Views
730
A 2nd Quantization states
Replies
1
Views
759
I Heisenberg uncertainty principle and the canonical momentum operator
Replies
32
Views
3K
B Heisenberg Uncertainty Principle question
Replies
9
Views
841

Quantum Physics

Quantum physics, or quantum mechanics, is a branch of physics that explores the behavior of matter and energy at the smallest scales, where classical physics principles break down. It introduces the concept of quantization, suggesting that certain properties, such as energy levels, are quantized and can only exist in discrete values.

Quantum mechanics encompasses wave-particle duality, where particles like electrons exhibit both wave and particle characteristics. The theory is probabilistic, relying on probability amplitudes to predict outcomes, and features phenomena like superposition, where particles can exist in multiple states simultaneously.

Quantum physics has transformed our understanding of the microscopic world, leading to technologies like transistors and lasers, and continues to provoke profound questions about the nature of reality and the role of observation in shaping it.

Hot Threads

Hot Threads

Recent Insights

Back
Top