Undergrad Emission probability in blackbody spectrum derivation

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The discussion centers on the concept of emission probability in the context of blackbody spectrum derivation. There is a clarification that the emission probability, denoted as p, is not a probability density but rather a straightforward probability indicating whether emission has occurred. The presenter does not explicitly state this distinction, leading to some confusion. Understanding this difference is crucial for accurately interpreting the blackbody spectrum. Overall, the emphasis is on correctly defining the nature of the emission probability in this context.
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No, ##p## is not probability density. It's just the probability that emission happened.
 
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Thread 'Two equivalent statements of time reversal symmetric Hamiltonian'

Time reversal invariant Hamiltonians must satisfy ##[H,\Theta]=0## where ##\Theta## is time reversal operator. However, in some texts (for example see Many-body Quantum Theory in Condensed Matter Physics an introduction, HENRIK BRUUS and KARSTEN FLENSBERG, Corrected version: 14 January 2016, section 7.1.4) the time reversal invariant condition is introduced as ##H=H^*##. How these two conditions are identical?
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