%0 Journal Article %A Relaño Pérez, Armando %A Molina, R. A. %A Retamosa Granado, Joaquín %T 1/f noise in the two-body random ensemble %D 2004 %@ 1539-3755 %U https://hdl.handle.net/20.500.14352/51290 %X We 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. %~