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pro vyhledávání: '"Olson, S. Jay"'
Autor:
Olson, S. Jay
If a civilization embarks on high-speed intergalactic expansion, growing to a cosmological scale over time, communication between remote galaxies in the civilization will incur an extreme time delay, due to the distance involved. Indeed, if the net e
Externí odkaz:
http://arxiv.org/abs/2208.07871
Autor:
Olson, S. Jay, Ord, Toby
We present a model where some proportion of extraterrestrial civilizations expand uniformly over time to reach a cosmological scale. We then ask what humanity could infer if a sky survey were to find zero, one, or more such civilizations. We show how
Externí odkaz:
http://arxiv.org/abs/2106.13348
Autor:
Olson, S. Jay
Ambitious civilizations that expand for resources at an intergalactic scale could be observable from a cosmological distance, but how likely is one to be visible to us? The question comes down to estimating the appearance rate of such things in the c
Externí odkaz:
http://arxiv.org/abs/2002.08194
Autor:
Olson, S. Jay
We present a simplified description of expansionistic life in the standard relativistic cosmology. The resulting model is exactly integrable, yielding a simple set of predictive formulas. This allows one to quickly propose new scenarios for the life
Externí odkaz:
http://arxiv.org/abs/1805.06329
Autor:
Olson, S. Jay
High-energy astrophysical events that cause galaxy-scale extinctions have been proposed as a way to explain or mollify the Fermi Paradox, by making the universe at earlier times more dangerous for evolving life, and reducing its present-day prevalenc
Externí odkaz:
http://arxiv.org/abs/1704.04125
Autor:
Olson, S. Jay
Publikováno v:
International Journal of Astrobiology, 1-9, (2017)
Suppose that advanced civilizations, separated by a cosmological distance and time, wish to maximize their access to cosmic resources by rapidly expanding into the universe. How does the presence of one limit the expansionistic ambitions of another,
Externí odkaz:
http://arxiv.org/abs/1608.07522
Autor:
Olson, S. Jay
Publikováno v:
Journal of Cosmology and Astroparticle Physics 04 (2016) 021
If a subset of advanced civilizations in the universe choose to rapidly expand into unoccupied space, these civilizations would have the opportunity to grow to a cosmological scale over the course of billions of years. If such life also makes observa
Externí odkaz:
http://arxiv.org/abs/1512.01521
Autor:
Olson, S. Jay
If advanced civilizations appear in the universe with an ability and desire to expand, the entire universe can become saturated with life on a short timescale, even if such expanders appear rarely. Our presence in an apparently untouched Milky Way th
Externí odkaz:
http://arxiv.org/abs/1507.05969
Autor:
Motes, Keith R., Olson, Jonathan P., Rabeaux, Evan J., Dowling, Jonathan P., Olson, S. Jay, Rohde, Peter P.
Publikováno v:
Phys. Rev. Lett. 114, 170802 (2015)
Quantum number-path entanglement is a resource for super-sensitive quantum metrology and in particular provides for sub-shotnoise or even Heisenberg-limited sensitivity. However, such number-path entanglement has thought to have been resource intensi
Externí odkaz:
http://arxiv.org/abs/1501.01067
Autor:
Olson, S. Jay
Publikováno v:
Classical and Quantum Gravity 32 (2015) 215025
In the context of a homogeneous universe, we note that the appearance of aggressively expanding advanced life is geometrically similar to the process of nucleation and bubble growth in a first-order cosmological phase transition. We exploit this simi
Externí odkaz:
http://arxiv.org/abs/1411.4359