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quantum physics

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  1. Phys12
    Thread

    I Why do you need infinite size matrix which commute...

    ...to give a number? https://ocw.mit.edu/courses/physics/8-04-quantum-physics-i-spring-2016/lecture-notes/MIT8_04S16_LecNotes5.pdf On page 6, it...
    Thread by: Phys12, Aug 5, 2018, 2 replies, in forum: Quantum Physics
  2. Safder Aree
    Thread

    Wave packet width given a wave function

    1. The problem statement, all variables and given/known data Find the wave packet Ψ(x, t) if φ(k) = A for k0 − ∆k ≤ k ≤ k0 + ∆k and φ(k) = 0 for...
    Thread by: Safder Aree, Jun 13, 2018, 2 replies, in forum: Introductory Physics Homework
  3. Safder Aree
    Thread

    Harmonic Oscillator violating Heisenberg's Uncertainity

    1. The problem statement, all variables and given/known data Does the n = 2 state of a quantum harmonic oscillator violate the Heisenberg...
    Thread by: Safder Aree, Jun 12, 2018, 8 replies, in forum: Introductory Physics Homework
  4. JordanPolla
    Thread

    I Can something be caused and be ontologically random?

    Or does ontological probability exist? I was reading an article that came up in my google searches (...
    Thread by: JordanPolla, May 27, 2018, 2 replies, in forum: Quantum Physics
  5. Giulio Prisco
    Thread

    I Einstein-Bohr "photon box" debate and general relativity

    I see this has been already discussed but the old threads are closed. EPR before EPR: a 1930 Einstein-Bohr thought experiment revisited "In this...
    Thread by: Giulio Prisco, Apr 24, 2018, 12 replies, in forum: Quantum Physics
  6. Greg Bernhardt
    Thread

    Insights Interview with Astrophysicist: Adam Becker - Comments

    Greg Bernhardt submitted a new PF Insights post Interview with Astrophysicist: Adam Becker [ATTACH] Continue reading the Original PF Insights Post.
    Thread by: Greg Bernhardt, Mar 24, 2018, 129 replies, in forum: Quantum Physics
  7. Jeffrey phalen
    Thread

    B Reason for the speed of light

    Is it possible that the speed of light exists because we cannot move faster than our particles? I.e. the speed of electrons that create the...
    Thread by: Jeffrey phalen, Mar 22, 2018, 16 replies, in forum: General Physics
  8. Arik Salehi
    Thread

    B Explanation of Quantum Entanglement Please

    Hello, I am 12 years old in 6th grade and love physics and Quantum Physics, I would love an explanation of Quantum Physics and Topological Quantum...
    Thread by: Arik Salehi, Mar 7, 2018, 4 replies, in forum: Quantum Physics
  9. Jianphys17
    Thread

    I Particles as matter waves

    Hi at all, i've the following question: How the fondamental particles (electrons, protons) are seen as matter waves, what shape and size should be...
    Thread by: Jianphys17, Feb 15, 2018, 5 replies, in forum: Quantum Physics
  10. sha1000
    Thread

    A Wavelength of the pilot wave

    Hi, I am new to the Pilot Wave theory. In my understanding this theory gives a hope for reconstruction of the realism. But I have several maybe...
    Thread by: sha1000, Jan 19, 2018, 4 replies, in forum: Quantum Physics
  11. NessunDorma
    Thread

    A Why do space translations satisfy the Wigner's Theorem?

    Some books argue that typical coordinate transformations such as space translations and rotations are represented in quantum mechanics by unitary...
    Thread by: NessunDorma, Dec 28, 2017, 7 replies, in forum: Quantum Physics
  12. Abu
    Thread

    B Planck-Einstein relation and the Photoelectric Effect

    Hi everyone, I just have some confusion regarding Planck's and Einstein's equation. The following is an explanation of the photoelectric effect...
    Thread by: Abu, Dec 16, 2017, 3 replies, in forum: Quantum Physics
  13. Bananen
    Thread

    Derive the relation between the P & R branches

    Hi, I have an assignment to derive the two following expressions: R(J)-P(J)=2B'(2J+1) R(J-1)-P(J+1)=2B''(2J+1) where Bis the rotational constant...
    Thread by: Bananen, Dec 4, 2017, 2 replies, in forum: Advanced Physics Homework
  14. Jacques Marrot
    Thread

    B Quantum Teleportation Question from a Curious 10 year old

    I am doing a GT project for elementary school. The questions I have to ask are not too complicated, and I only have 2 questions. I know that...
    Thread by: Jacques Marrot, Dec 1, 2017, 14 replies, in forum: Quantum Physics
  15. mr1batman
    Thread

    How can i start in quantum physics and quantum mechanics?

    i want an article or video that i can start with at the journy of understanding the basics of quantum physics and quantum mechanics i don't want...
    Thread by: mr1batman, Nov 4, 2017, 10 replies, in forum: Academic Guidance
  16. nnope
    Thread

    Point me in the right direction -- Quantum Physics learning resources

    I am trying to learn all about Quantum Physics on my own but I am struggling to find credible sources of information. As you are probably aware...
    Thread by: nnope, Oct 7, 2017, 9 replies, in forum: Academic Guidance
  17. nnope
    Thread

    B Entanglement, what is it?

    I dont have much of a background in quantum physics so be patient with my questions please. Basically I want to know how does entanglement...
    Thread by: nnope, Oct 1, 2017, 79 replies, in forum: Quantum Physics
  18. Randall B
    Thread

    My Introduction

    Hi All, I am brand new here, still trying to navigate the website so please forgive me if this is not the appropriate space for the following. I...
    Thread by: Randall B, Sep 29, 2017, 1 replies, in forum: New Member Introductions
  19. asimov42
    Thread

    A Observable particles as asymptotic states...

    I've read Arnold Neumaier's excellent Insight article on virtual particles, but I'm very confused about one thing: Observable particles are...
    Thread by: asimov42, Sep 20, 2017, 47 replies, in forum: Quantum Physics
  20. ProgrammingGodJordan
    Thread

    A ‘Transverse Field Ising Spin’-compatible Super Hamiltonian

    Is it possible to create a ‘Transverse Field Ising Spin’-compatible Super Hamiltonian? I want to apply the Super Hamiltonian to this paper:...
    Thread by: ProgrammingGodJordan, Sep 8, 2017, 2 replies, in forum: Quantum Physics
  21. Daria K
    Thread

    B Does this theorem “theoretically” falsify macrorealism?

    Hello! Recently I found this article: http://quantum-journal.org/papers/q-2017-07-14-13/pdf/ Being familiar with some basis of quantum...
    Thread by: Daria K, Aug 19, 2017, 3 replies, in forum: Quantum Physics
  22. KBon
    Thread

    I Does the wave function shorten when approaching light speed?

    Relative to the observer, objects shorten when approaching the speed of light exponentially. Does this rule also apply to the wave function? Does...
    Thread by: KBon, Aug 8, 2017, 2 replies, in forum: Quantum Physics
  23. KBon
    Thread

    B Are there Hadrons with more than three quarks?

    As far as I know there are Mesons (quark-Antiquark pair) and Baryons (three quarks). But are there Hadrons which contain more than 3 Quarks?
    Thread by: KBon, Aug 3, 2017, 8 replies, in forum: High Energy, Nuclear, Particle Physics
  24. KBon
    Thread

    A theorist has joined the game

    Hey there! My name is Karol and I am 16 years old. I joined the Physics Forums becuause I have many questions and ideas on how the universe might...
    Thread by: KBon, Aug 3, 2017, 3 replies, in forum: New Member Introductions
  25. smartypants123
    Thread

    B What is an electrostatic/Coulomb barrier? How is it created?

    I learned that for nuclear fusion to take place, particles must overcome the electrostatic field but what exactly is it? And how is it created/formed?
    Thread by: smartypants123, Aug 2, 2017, 4 replies, in forum: General Physics
  26. FL0R1
    Thread

    B The first light atomic nucleus with a second face

    The first light atomic nucleus with a second face Physicist found the first light atomic nucleus in a lab that had too little resources....
    Thread by: FL0R1, Jul 23, 2017, 1 replies, in forum: Atomic and Condensed Matter
  27. Cleber
    Thread

    A Generalizing distinguishability of photons on HOM dip?

    Hello all. I am trying to determine what is the effect of having photons that are distinguishable undergoing a quantum interference process. To do...
    Thread by: Cleber, Jul 14, 2017, 2 replies, in forum: Quantum Physics
  28. lawlieto
    Thread

    Quantum Best book for quantum physics?

    I'd like to be a quantum physicist in the future, so I'd like to do quantum properly, but there are so many books out there, and it's a bit hard...
    Thread by: lawlieto, Jun 28, 2017, 4 replies, in forum: Science and Math Textbooks
  29. jorgeha
    Thread

    I Calculate the energy of the electron in a non-H like atom

    Hello mates. I was doing some research about Rydberg atoms, and I came up with this question: what's the energy of an electron in n energy level...
    Thread by: jorgeha, Jun 27, 2017, 6 replies, in forum: Quantum Physics
  30. lorysnark
    Thread

    Filmmaker/Artist/Quantum Physics/Physics/Cosmology/Parent

    Hello folks. This thread is open for discussion among those who want to explore the similarities between the experiential principles found in art...
    Thread by: lorysnark, Jun 6, 2017, 2 replies, in forum: New Member Introductions
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