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Hello,

I have read several articles/websites which talk about modelling white dwarfs,

In all of these papers they state that it can be assumed the electrons have temperature zero, i.e.

T<<T_fermi.

I haven't been able to find a solid explanation of why this is approximation is possible,

Is it due to the huge degeneracies in these stars which means that each of the electrons can reside in a ground state -> so their temperature can be considered as zero?

I just think its strange that this assumption is possible considering the actual temperature of these stars is enormous.

While I'm asking about things of this topic, I have also seen people state when E_fermi>>m_e c^2 relativistic effects become important. Is this because it implies the particles are moving very quickly?

I have read several articles/websites which talk about modelling white dwarfs,

In all of these papers they state that it can be assumed the electrons have temperature zero, i.e.

T<<T_fermi.

I haven't been able to find a solid explanation of why this is approximation is possible,

Is it due to the huge degeneracies in these stars which means that each of the electrons can reside in a ground state -> so their temperature can be considered as zero?

I just think its strange that this assumption is possible considering the actual temperature of these stars is enormous.

While I'm asking about things of this topic, I have also seen people state when E_fermi>>m_e c^2 relativistic effects become important. Is this because it implies the particles are moving very quickly?

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