Recent questions in Quantum Field Theory

+286 votes

0 answers

What is the quantum field made out of when it is not manifesting anything?

asked Apr 15, 2022 in Quantum Field Theory by NovaMystic

+270 votes

0 answers

What happens to the fringe width in young's double slit experiment when a thin sheet of transparent material is kept in front of one of the slits?

asked Apr 14, 2022 in Quantum Field Theory by chull

+106 votes

0 answers

How can quantum electrodynamics (QED) be so successful when it is clearly not a complete theory?

asked Apr 14, 2022 in Quantum Field Theory by MysticEnigma

+27 votes

0 answers

In quantum mechanics mass is the interaction of a particle with the Higgs field, but what is mass really? Is it energy inside the particles or what? I want to understand the mass (what is it)? What is that thing that causes the heaviness of objects?

asked Apr 14, 2022 in Quantum Field Theory by Mark101010

+90 votes

0 answers

What is the definition of a Hadamard state?

asked Apr 14, 2022 in Quantum Field Theory by tore81

+309 votes

0 answers

What is Young’s double-slit experiment and why do we need to use monochromatic light for it?

asked Apr 14, 2022 in Quantum Field Theory by longboat

+305 votes

0 answers

How did scientists discover/determine for the first time that an atom has an equal number of electrons and protons? What is the empirical evidence?

asked Apr 14, 2022 in Quantum Field Theory by talking_m (2.8k points)

+11 votes

0 answers

I love quantum physics, but how do we come to terms with a universe from nothing?

asked Apr 13, 2022 in Quantum Field Theory by Mazmcf35

+25 votes

0 answers

Do particles "pop into and out of existence"? How does it happen? What is the experimental evidence?

asked Apr 13, 2022 in Quantum Field Theory by zedlep

+5 votes

0 answers

When an electron (spin +1/2) absorbs a photon of spin +1, does it get spin 3/2?

asked Apr 13, 2022 in Quantum Field Theory by benchodthe1st

+147 votes

0 answers

How does Quantum Field Theory explain superposition and entanglement?

asked Apr 13, 2022 in Quantum Field Theory by NebulaSeeker

+963 votes

0 answers

Why an atom in a solid (at room temperature) cannot overcome the Coulomb's force via quantum tunnelling?

asked Apr 13, 2022 in Quantum Field Theory by bilco (1.7k points)

+8 votes

0 answers

Can we create a positron and an electron from a single photon?

asked Apr 13, 2022 in Quantum Field Theory by Ay Bee Cee

+13 votes

0 answers

When a photon goes through a slit, it diffracts. Does this create more photons?

asked Apr 13, 2022 in Quantum Field Theory by Befair

+13 votes

0 answers

Is it reasonable to consider that space-time is no more nor less than its contents, the quantum fields and 'particles' within it?

asked Apr 13, 2022 in Quantum Field Theory by RedToby

+7 votes

0 answers

How is “NOW” defined in quantum mechanics?

asked Apr 13, 2022 in Quantum Field Theory by Monster

+12 votes

0 answers

Can you explain the difference between free electron theory and quantum mechanics?

asked Apr 13, 2022 in Quantum Field Theory by RadiantOracle

+16 votes

0 answers

How do photons have energy if they have no mass?

asked Apr 12, 2022 in Quantum Field Theory by LunarOracle

+21 votes

0 answers

If the Schrodinger equation doesn't require time and space to be quantized, why do we need a theory of quantum gravity?

asked Apr 12, 2022 in Quantum Field Theory by SDAWEDFF

+245 votes

0 answers

What experiment does confirm the very notion of "moving"/"jiggling" atoms in a solid?

asked Apr 12, 2022 in Quantum Field Theory by AuroraBloom

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