Recent questions in Quantum Field Theory

+184 votes

0 answers

How does the wave function of a quantum system collapse upon measurement?

asked Jan 19, 2023 in Quantum Field Theory by verynewtothis

+136 votes

0 answers

When the distance between screen and slit decrease, what is the effect on the fringe width?

asked Jan 19, 2023 in Quantum Field Theory by EmberHarmony

+19 votes

0 answers

How do virtual particles arise, and what is their role in quantum interactions?

asked Jan 19, 2023 in Quantum Field Theory by markplumb

+89 votes

0 answers

Do fields really exist? Could it not be that the field emerges after we put the particle—just like in quantum mechanics, where particles act like they have well-defined positions only when they are observed?

asked Jan 19, 2023 in Quantum Field Theory by NoelK388

+103 votes

0 answers

What do amplitudes mean in QFT?

asked Jan 19, 2023 in Quantum Field Theory by Onthetools

+23 votes

0 answers

What is the role of a conscious human being in the double slit experiment? Do they just become part of the apparatus (the screen), or do they play some other role?

asked Jan 19, 2023 in Quantum Field Theory by Bluedanw1975

+115 votes

0 answers

Why should the Lagrangian density in Quantum Field Theory be used and not the Hamiltonian as in non-relativistic quantum mechanics?

asked Jan 19, 2023 in Quantum Field Theory by Granfernewtown20

+15 votes

0 answers

Given that quantum tunneling of "macroscopic" object has non-zero probability and there're nearly infinite number of those events with infinitesimal probability, why don't the big and small numbers cancel each other?

asked Jan 19, 2023 in Quantum Field Theory by MakitaUser

+167 votes

0 answers

What are the pros and cons of "Quantum Field Theory" by Sheldon Glashow? Is it a good book for beginners?

asked Jan 19, 2023 in Quantum Field Theory by Telmay

+74 votes

0 answers

Is the spin direction of a measured entangled particle A always parallel to the spin direction of its complementary entangled particle A' in space? Or is there deviation in this parallelness?

asked Jan 19, 2023 in Quantum Field Theory by goldwise

+17 votes

0 answers

What do physicists think about gravity being a quantum field?

asked Jan 19, 2023 in Quantum Field Theory by Aron82 (3.8k points)

+412 votes

0 answers

How did physicists derive (come up with) the calculation of the probability for quantum tunnelling of an electron?

asked Jan 19, 2023 in Quantum Field Theory by mantor

+205 votes

0 answers

Why do you believe quantum mechanics and general relativity will never be unified?

asked Jan 19, 2023 in Quantum Field Theory by frogger

+148 votes

0 answers

Are waves in physics made up of more fundamental objects?

asked Jan 19, 2023 in Quantum Field Theory by NebulaOracle

+93 votes

0 answers

According to QFT, under certain conditions, the energy associated with quantum fields in a vacuum can be negative. In this case, since mass and energy are the same thing, does gravity become repulsive?

asked Jan 19, 2023 in Quantum Field Theory by chillimonster

+20 votes

0 answers

I want to learn about quantum theory. How can I start this?

asked Jan 18, 2023 in Quantum Field Theory by MysticHarmony

+9 votes

0 answers

Which is the simplest QFT that describes the interaction between electrons and photons (quantum field theory, quantum electrodynamics, action, interactions, physics)?

asked Jan 18, 2023 in Quantum Field Theory by stuart avo

+4 votes

0 answers

What is the evidence that virtual particles do not exist outside their interaction point (in quantum field theory)?

asked Jan 18, 2023 in Quantum Field Theory by jackleu

+222 votes

0 answers

In Young's double slit experiment, what would happen if there was only one slit instead of two?

asked Jan 18, 2023 in Quantum Field Theory by Max22

+12 votes

0 answers

Do fields - not excitations of fields - have properties or constants?

asked Jan 18, 2023 in Quantum Field Theory by Goddo

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Recent questions in Quantum Field Theory

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