The discussion revolves around the potential for fermions to convert into bosons and the implications of such a transformation, particularly in terms of sharing quantum states and compressibility. It explores theoretical aspects of particle interactions and conservation laws, as well as the characteristics of bosonic and fermionic systems.
Participants express differing views on the feasibility of fermions converting to bosons and the implications of such transformations. There is no consensus on the specifics of conservation laws or the definitions of compressibility in this context.
Participants acknowledge limitations in their understanding of quantum states, particularly regarding spin and helicity, which may affect the clarity of the discussion.
Can you explain what you mean by "(t)he system quantum state is conserved" and in what sense "photons are compressible"?anuttarasammyak said:An electron and a positron meet and become two photons. The system quantum state is conserved and photons are compressible. The reverse process is possible.
A single fermion in vacuum cannot turn into a single boson in vacuum due to conservation laws (can you tell which?). If you want to consider more than one particle please develop.RobbyQ said:TL;DR: Fermions to Bosons
Can Fermions turn into Bosons and thus share the same quantum state and become compressible?
And/Or is the opposite also possible?
"Compressible" is a poor term. The key thing that a system of bosons can do that a system of fermions can't is to form a Bose-Einstein condensate.RobbyQ said:share the same quantum state and become compressible?