III. Ecosmos: A Revolutionary Fertile, Habitable, Solar-Bioplanet Lifescape
1. Quantum Cosmology Theoretic Unity
Bousso, Raphael. The Holographic Principle. Reviews of Modern Physics. 74/825, 2002. A technical paper on a discrete, information rich universe akin to a hologram wherein the information content or measure of a three dimensional volume of space is proportional to the area of its two dimensional outer surface. One popular writeup of this approach is Hogan, Craig. “First Light.” New Scientist. January 11, 2003. A New Scientist update of Bousso's thinking is Touching the Multiverse by Amanda Gefter in the March 6, 2010 issue.
Brahma, Suddhasattwa, et al. Universal Signature of Quantum Entanglement Across Cosmological Distances. arXiv:2107.06910. We cite this entry by McGill University and University of Edinburgh physicists as one example among many as an indication of how our collaborative sapiensphere proceeds apace to quantify quantomic, atomic and ecosmomic realms across any depth and breadth. Into the 2020s quantum network systems are coming to pervade and distinguish an organic genesis.
universe originate from quantum fluctuations, most of the literature ignores the crucial role that entanglement between the modes of the fluctuating field plays in its observable predictions. In this paper, we import techniques from quantum information theory to reveal undiscovered predictions for inflation which, in turn, signals how quantum entanglement across cosmological scales can affect large structural formations. Our key insight is that observable long-wavelengths must be part of an open quantum system, so that the quantum fluctuations can decohere in the presence of an environment of short-wavelengs. (Abstract)
Brumfield, Geoff. Cosmology Gets Real. Nature. 422/108, 2003. A news report on the growing affirmation by the worldwide astronomical community of the big bang evolutionary model of the universe.
By clarifying the age and make-up of the Universe, researchers have ushered in an era of precision cosmology. (108)
Calcagni, Gianluca. Classical and Quantum Cosmology. Europe: Springer, 2017. A Spanish National Research Council physicist provides an 800+ page, 3,500 reference text compendium for this 21st century unification of infinitesimal quantum phenomena with an inflationary and temporally dynamic universe of infinite expanse. See also Quantum Cosmology by Martin Bojowald (Springer, 2011) for another integral volume.
This comprehensive textbook is devoted to classical and quantum cosmology, with an emphasis on quantum gravity and string theory and their observational imprint. It covers major challenges in theoretical physics such as the big bang and the cosmological constant. An extensive review of standard cosmology, the cosmic microwave background, inflation and dark energy sets the scene for the application of main quantum-gravity and string-theory models of cosmology.
Cartlidge, Edwin. Microwaves Map Cosmic Origins. Physics World. June, 2001. The latest satellite results confirm the inflationary model and an appreciation of a “scale-invariant universe.”
In the (inflation) process, quantum fluctuations were stretched out into density variations that eventually led to all the structure in the universe, from galaxies to humans. (5)
Out of the Void.
I comment at length because this news article aptly suggests how physics, cosmology, and also philosophy have, mostly unbeknownst, taken leave of reality. Physical science, an almost totally male pursuit, after a century of plumbing the depths of space, time and matter, seems now stuck there. For this is where causal answers lie, its paradigm avers, since they will legislate any extant cosmos. But the implied result becomes an alien, pitiless, computing machine, with no place of human observers. Strings are out, it is said, only to be replaced by “tangles.”
In Markopoulou and Krib’s version of loop quantum gravity the universe as a giant quantum computer, where each quantum of space is replaced by a bit of quantum information. (31) By replacing loop quantum gravity’s chunks of space with qubits, what used to be a frame of reference – space itself – becomes just a web of information. (31) If the new loop quantum gravity does go the distance, though, it could give us a new sense of our place in the universe. If electrons and quarks – and thus atoms and people – are a consequence of the way space-time tangles up on itself, we could be nothing more than a bundle of stubborn dreadlocks in space. (31)
Castelvecchi, David. Shadow World. Science News. November 17, 2007. A report on the well-received ‘conjecture’ of Institute of Advanced Study physicist Juan Maldacena, that also offers a good review of quantum theory frontiers. Another entry is the article by Michael Dine on String Theory and the LHCollider in the December 2007 Physics Today. But are such gyrations akin to Ptolemaic epicycles which tried to prop up a fundamentally erroneous model?
In his (Maldecena) vision, the mathematical machinery of strings completely translates into a more ordinary quantum theory of particles, but one whose would live in a universe without gravity. Gravity would be replaced by forces similar to the nuclear forces that prevailed in the universe’s first instants. And this would be a universe with fewer dimensions that the realm inhabited by strings. (315) Just as a hologram creates the illusion of the third dimension by scattering light off a 2-D surface, gravity and the however many dimensions of space could be a higher-dimensional projection of a drama playing out in a flatter world. (315)
Chalmers, Matthew. Welcome to Quantum Gravity. Physics World. November, 2003. An introduction for a special issue on the frontiers of cosmological science with articles on string theory by Leonard Susskind, loop quantum gravity by Carlo Rovelli and on quantum gravity phenomenology by Giovanni Amelino-Camelia. In the same issue is a note on the work of Nobel laurate Geradus ‘t Hooft on a deterministic quantum physics.
Chamcham, Khalil, et al, eds. The Philosophy of Cosmology. Cambridge: Cambridge University Press, 2017. With coeditors Joseph Silk, John Barrow, and Simon Saunders, the proceedings of a Templeton funded September 2014 conference organized by a group with this name (Google) based in New York City, Oxford, and Cambridge. At the outset, while a stellar array such as George Ellis, Bernard Carr, Joel Primack, James Hartle, Sean Carroll, Carlo Rovelli, and David Albert presented, the speakers were 30 men sans any women. Some chapters are The Domains of Cosmology by G. Ellis, Black Holes, Cosmology and the Passage of Time by B. Carr, and The Observer Strikes Back by J. Hartle and Thomas Hertog. While notice of the anthropic principle, and J. A. Wheeler’s “it from bit” circuit popped up, the collection remains fixated within an abstract cosmos devoid of a vivifying source, personal destiny or phenomenal essence of its own.
Childs, Andrew, et al. Universal Computation by Multi-Particle Quantum Walk. Science. 339/791, 2013. We cite this work by University of Waterloo, Canada, scientists from Combinatorics & Optimization, Quantum Computing, and Physics & Astronomy departments as a good instance of this total rethinking and appropriation of nature’s essence as a communicative complex system, similar to every other strata from universe to us.
A quantum walk is a time-homogeneous quantum-mechanical process on a graph defined by analogy to classical random walk. The quantum walker is a particle that moves from a given vertex to adjacent vertices in quantum superposition. Here we consider a generalization of quantum walk to systems with more than one walker. A continuous-time multi-particle quantum walk is generated by a time-independent Hamiltonian with a term corresponding to a single-particle quantum walk for each particle, along with an interaction term. Multi-particle quantum walk includes a broad class of interacting many-body systems such as the Bose-Hubbard model and systems of fermions or distinguishable particles with nearest-neighbor interactions. We show that multi-particle quantum walk is capable of universal quantum computation. Since it is also possible to efficiently simulate a multi-particle quantum walk of the type we consider using a universal quantum computer, this model exactly captures the power of quantum computation. (Abstract)
Coley, Alan and George Ellis. Theoretical Cosmology. Classial and Quantum Gravity. 37/1, 2020. Dalhousie University and University of Cape Town physicists inaugurate the 2020s decade with a 50 page survey the past, present and future of salient mathematical, computational, spatial form, temporal course, philosophical aspects. Staying within our own universe, black holes, gravitational waves, singularities, dark energy, nonlinearities, string inflation and more are considered. But again it would seem that there must be some innate, eternal cosmic purpose for valiant participatory human beings whom altogether are capable of observing, quantifying, recording such depths and reaches.
Conzinu, Pedro, et al. Primordial Black Holes from Pre-Big Bang Inflation. Journal of Cosmology and Astroparticle Physics. August, 2020. We enter this posting by University of Pisa and Bari physicists as an instance of worldwide online collaborations which are now able to explore, hypothesize and quantify, so it seems, across any spatial and temporal expanse. In 2020 regard, whom might we microcosmic collaborative peoples altogether be to span and learn about such universal breadth and depth? See also, for example, The Self-Tuning of the Cosmological Constant at arXiv:2001.05510. By a philoSophia view, could it be imagined that an ecosmic genesis is trying to self-recognize and pass its operational knowledge onto our Earthkinder agency for a future cocreativity.
We discuss the possibility of producing a significant fraction of dark matter in the form of primordial black holes in the context of the pre-big bang inflationary scenario. We take into account, to this purpose, the enhancement of curvature perturbations possibly induced by a variation of the sound-speed parameter during the string phase of high-curvature inflation. After imposing observational constraints, we find that the considered class of models is compatible with the production of a large amount of primordial black holes in the mass range relevant to dark matter. (Abstract)