A particle in a stationary state with energy E (all kinetic) is shown to have some probability of tunnelling through a potential barrier. (say an electron in a potential well, where U = 0 in the well, and U_1 out of the well)(adsbygoogle = window.adsbygoogle || []).push({});

My question is, if the particle ends up in the classically forbidden region, what does its energy look like in that region?

My book says that no energy is lossed in the tunneling procces, so does that mean that no KE is lost to PE due to tunneling? how could that be?

Classically the particle would have a negative Kinetic engergy which would be meaningless since it would imply an imaginary velocity or negative mass.

If you could measure the KE in the classically forbidden region, what would it read?

Thanks in advance

-JFo

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# If you could measure the KE in the classically forbidden region

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