Experimental Evidence of the Present Containment Principle (PCP) via Time Reversal on a NISQ Quantum Computer

 This work presents experimental evidence supporting the Present Containment Principle (PCP),
 a theory postulating that quantum information is fundamentally conserved (global unitarity), and
 that apparent irreversibility and the arrow of time emerge from practical limitations, such as noise
 and accessibility. Using an IBM noisy intermediate-scale quantum (NISQ) computer, a time-reversal
 (Loschmidt echo) experiment was conducted with an entangled Bell state. The results demonstrate
 a reversal fidelity of 61.2