RT Journal Article SR Electronic T1 Explaining recurring maser flares in the ISM through large-scale entangled quantum mechanical states JF Science Advances JO Sci Adv FD American Association for the Advancement of Science SP e1601858 DO 10.1126/sciadv.1601858 VO 3 IS 3 A1 Rajabi, Fereshteh A1 Houde, Martin YR 2017 UL http://advances.sciencemag.org/content/3/3/e1601858.abstract AB We apply Dicke’s theory of superradiance (introduced in 1954) to the 6.7-GHz methanol and 22-GHz water spectral lines, often detected in molecular clouds as signposts for the early stages of the star formation process. We suggest that superradiance, characterized by burst-like features taking place over a wide range of time scales, may provide a natural explanation for the recent observations of periodic and seemingly alternating methanol and water maser flares in G107.298+5.639. Although these observations would be very difficult to explain within the context of maser theory, we show that these flares may result from simultaneously initiated 6.7-GHz methanol and 22-GHz water superradiant bursts operating on different time scales, thus providing a natural mechanism for their observed durations and time ordering. The evidence of superradiance in this source further suggests the existence of entangled quantum mechanical states, involving a very large number of molecules, over distances of up to a few kilometers in the interstellar medium.