Relaño Pérez, ArmandoMolina, R. A.Retamosa Granado, Joaquín2023-06-202023-06-202004-071539-375510.1103/PhysRevE.70.017201https://hdl.handle.net/20.500.14352/51290©2004 The American Physical SocietyWe show that the spectral fluctuations of the two-body random ensemble exhibit 1/f noise. This result supports a recent conjecture stating that chaotic quantum systems are characterized by 1/f noise in their energy level fluctuations. After suitable individual averaging, we also study the distribution of the exponent alpha in the 1/f(alpha) noise for the individual members of the ensemble. Almost all the exponents lie inside a narrow interval around alpha=1, suggesting that also individual members exhibit 1/f noise, provided they are individually unfolded.engjournal articlehttp://dx.doi.org/10.1103/PhysRevE.70.017201http://journals.aps.org/open access536Particle-SystemsSpectrumTermodinámica2213 Termodinámica