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Recent Additions: New and Updated Entries in the Past 60 Days
Displaying entries 16 through 30 of 78 found.


Pedia Sapiens: A Planetary Progeny Comes to Her/His Own Actual Factual Knowledge

A Learning Planet > Mindkind Knowledge

Sulis, William. Contextuality in Neurobehavioral and Collective Intelligence Systems. . We note this MDPI entry as the veteran McMaster University clinical psychologist continues his mathematic and quantum imaginations apace (search herein and WS website), which are often about deep ways that human discourse can take on its own cognitive acumen. One hundred references survey many 21st efforts to articulate and verify this insistent natural advance. (In regard, the composite word "Huantum" occurred to me for our own manifest occasion of a quantum state,)

Ecosmos: A Revolutionary Fertile, Habitable, Solar-Bioplanet Lifescape

Animate Cosmos

Thompson, Joanna. Life Helps Make Almost Half of All Minerals on Earth. Quanta. July 1,, 2022. A science writer explains and praises the latest major, update contribution by Robert Hazen (search) and Shaunna Morrison, Carnegie Institution for Science, Washington DC, Sergey Krivovichev, Kola Science Center. Murmansk, and Robert Downs, University of Arizona about the many ways that living systems have influenced our animated geological compositions. Their paper is Lumping and Splitting: Toward a Classification of Mineral Natural Kinds in American Mineralogist 107/7, 2022.

The impact of Earth’s geology on life is easy to see, with organisms adapting to environments as different as deserts, mountains, forests and oceans. The full impact of life on geology, however, can be easy to miss. A new survey of our planet’s minerals corrects that omission. Among its findings is evidence that about half of all mineral diversity is the direct or indirect result of living entity systems. It’s a discovery that could provide valuable insights to scientists piecing together Earth’s complex geological history — and also to those searching for evidence of life beyond this world.

Morrison and Hazen also identified 57 processes created all known minerals. These processes included weathering, chemical precipitations, metamorphic transformations, lightning strikes, radiation, oxidation, massive impacts, and even condensations in interstellar space. The biggest single factor in mineral diversity on Earth is water in a variety of chemical and physical ways. But they also found that life is a key player whose fingerprints are on about half of all minerals.

Animate Cosmos > cosmos

Adhikari, Susmita, et al. Astrophysical Tests of Dark Matter Self-Interactions. arXiv:2207.10638. Fourteen scientists in India, the USA, the UK, Germany and Iceland post a 58 page study with 688 references about our latest worldwise collatorative engagement with this novel substantial phase. Our take is then meant to record these recent findings of its apparent tendency to interact and organize on its own. The copious entry is also a good instance of such 2020s Earthropocene era scientific frontiers, on the way it seems to a whole Ecosmos quantification. See also A Better Way to Define Dark Matter Haloes by this team at 2207.11827. (Whom are we Earthlings altogether to be able to do and learn these features? Whatever grand discovery might we begin imagine, if to allow the very thought?)

Self-interacting dark matter (SIDM) arises generically in physics scenarios beyond the Standard Model that have dark sectors with light mediators or strong dynamics. SIDM models provide a promising way to explain galactic rotation curves, and go onto form a versatile framework for interpreting astrophysical phenomena. This review provides a comprehensive explanation of the physical effects and structures of SIDM ranging from galactic satellites to clusters. The review then discusses the theoretical motivation for self-interactions, degeneracies with gravitational effects, extensions to the single-component elastic-interactions SIDM framework, and future prospects. (Excerpts)

Animate Cosmos > cosmos

Aluri, Pavan, et al. Is the Observable Universe Consistent with the Cosmological Principle?. arXiv:2207.05765. We continue to cite entries such as this 85 page, 555 reference paper by a 24 person team posted in India, Italy, China, the UK, Belgium, Korea, Poland, Germany, Portugal, the USA, Iran, and New Zealand as a prime example of 2020s global collaborations. In some four centuries since Galileo our human explorations and findings have gone from a moon to a Multiverse. An Earthropocene sapiensphere now proceeds apace to achieve breadth and depth quantifications of the whole ecosmic uniVerse. In a planatural philosophia, it could seem that these scientific missions may serve an intended, functional requirement of a cocreative self-description, comprehension, acknowledge and affirmation.

The Cosmological Principle (CP) is the notion that the Universe is spatially isotropic and homogeneous on large scales, which culminates in the highly predictive Λ-Cold-Dark-Matter (ΛCDM) model. Yet issues remain and here we review current observations that may deviate from the standard CP. Such as varying cosmological parameters, cosmic dipoles and galaxy spins. While it is possible that a host of observational systematics are impacting results, it is equally plausible that precision cosmology may have outgrown the FLRW paradigm, an extremely pragmatic but non-fundamental symmetry assumption. (Excerpt)

Animate Cosmos > cosmos

Aluri, Pavan, et al. Is the Observable Universe consistent with the Cosmological Principle?.. arXiv:2207.05765. We continue to cite entries such as this 85 page, 555 referece paper by a 24 person team with postings in India, Italy, China, the UK, Belgium, Korea, Poland, Germany, Portugal, the USA, Iran, and New Zealand as an frontier example of extensive global collaborations. A novel Earthropocene sapiensphere thus proceeds apace to achieve breadth and depth scale quantifications of the whole ecosmic uniVerse. In regard, it would well seem that these scientific missiond serve an intended, functional requirement of self-description, comprehension, acknowledge and affirmation. See also The Cosmic Graph: Optimal Information Extraction from Large-Scale Structure using Catalogues. by Lucas Mankinen, et al. at 2207.05202.

The Cosmological Principle (CP) is the notion that the Universe is spatially isotropic and homogeneous on large scales, which culminates in the highly predictive Λ-Cold-Dark-Matter (ΛCDM) model. Yet issues remain and here we review current observations that may deviate from the standard CP. Such as varying cosmological parameters, cosmic dipoles and galaxy spins. While it is possible that a host of observational systematics are impacting results, it is equally plausible that precision cosmology may have outgrown the FLRW paradigm, an extremely pragmatic but non-fundamental symmetry assumption. (Excerpt)

Animate Cosmos > cosmos

Cotsakis, Spiros and A. P. Yefremov.. 100 Years of Mathematical Cosmology: Part A. Philosophical Transactions A. May, 2022. As an example of this consummate year, Institute of Gravitation and Cosmology, RUDN University, Russia and Dynamical Systems and Cosmology, University of the Aegean, Greece astrophysicists provide a broad retrospective on scientific advances and expansions over the past century. Indeed, prior to galaxies being found in the 1920s, only a circumsolar spacescape with starry reaches was known. (See Historic Prescience) Quantum phenomena was just being engaged. In our 21st century global phase, theories, computation, instruments and theories have brought us to an exocosmoses realm. Part B as The Future of Mathematical Cosmology is online in July 2022.

We cover a century of mathematical cosmology from the time of the Einstein static universe in 1917 until today. We divide the two issues into four main periods, the first one about astrophysical advances until 1960. The second period (1960–80) reviews geometric extensions of the standard model to date, singularities, chaotic behaviours and the initial input of particle physics into cosmology. Our survey for the third period (1980–2000) continues onto inflation, quantum phenomena, string theories, the multiverse, cosmic stability and modified gravity. The last period moves onto M-theoretic aspects, braneworlds, landscape, topological issues, measurement, dynamical features and dark energy. (Composite summary for both issues)

Animate Cosmos > cosmos

Covonw, Giovanni and Mauro Sereno. Lensing Cosmic Drift. arXiv:2205.05292. We cite this work by University of Naples and of Bologna astrophysicists for its content and as another instance whereif such collective Earthuman explorations could be seen to perform some whole scale function, (of which we are yet unawares), of intended, necessary universe self-quantification and internal descriptive record.

As the Universe expands, the redshift of distant sources changes with time. Here we discuss gravitational lensing phenomena that are a consequence of the cosmic drift between lensed source, gravitational lens, and observer. The angular position, magnification, distortion, and time delay of already existing multiple images change. The drift detection in image separation could be within reach of next generation surveys with μarcsec angular resolution.

Animate Cosmos > cosmos

Ji, Zhiyuan and Mauro Giavalisco. Reconstructing the Assembly of Massive Galaxies. II. Galaxies Develop Dense Stellar Cores as They Evolve toward Quiescence at Cosmic Noon. arXiv:2208.04325. We choose this entry by UM Amherst astronomers among many studies across the 21st century universe frontier for its exemplary content as worldwise explorers go forward with a seemingly innate, unlimited capability. Again how fantastic is it that we peoples can explore, reconstruct and quantify such wide and deep celestial realms, as if performing, unawares as yet, some intended Ecosmic sapiens function of self-description and realization. See also for example Galaxy Clustering from the Bottom Up by Carolina Cuesta-Lazaro, et al at 2208.05218.

I also wish to record that living a few miles away, for many years I have attended the Astronomy department weekly lecture symposium with presenters such as Debra Fischer (Yale), Fred Adams (U. Michigan), Tom Arny (UM), Anna Frebel (MIT), Nick Cowan (McGill) and many more.

We use the SED-fitting code Prospector to reconstruct the nonparametric star formation history (SFH) of massive star-forming galaxies (SFGs) and quiescent galaxies (QGs) at redshift to investigate the joint evolution of galactic star-formation activity and structural properties. We find significant correlations between the SFH and their morphology. We discuss possible physical scenarios for the observed evolution and find that our empirical constraints are in good quantitative agreement with the model predictions. (Excerpt)

Animate Cosmos > cosmos

Linder, Eric. Isogrowth Cosmology (How to Map the Universe). arXiv:2204.09071. The UC Berkeley astrophysicist casts back to 20th century findings about galactic, supernova, dark energy phenomena so to now view an ever-unfolding state of the Universe as an Earthuman intellect achieves such scientific perceptions and spacescape explorations. While Ferdinand Magellan (1480-1521) and Gerardus Mercator (1512-1594) once set out to circle and depict our round planet, some five centuries later our global sapiensphere continues this innate endeavor across the celestial raiment.

While general relativity ties together the cosmic expansion history and growth history of large scale structure, beyond the standard model these can have independent behaviors. We derive expressions for cosmologies with identical growth histories but different expansion histories, or other deviations. This provides a relation for isogrowth cosmologies, but also highlights in general the need for observations to measure each of the growth, expansion, gravity, and dark matter property histories. (Abstract)

In Section II (Cosmic Growth History) we derive the relations for isogrowth cosmology, and in Section III investigate three subcases where certain aspects of the physics have freedom while fixing others (i.e. the matter, gravity, and expansion behaviors). We discuss the use of isogrowth cosmology as a clear demonstration of freedoms and connections, and conclude with the general vision of mapping all four histories, in Section IV. (1) The mapping of all these histories through cosmological observations should be a central part of the vision for understanding our universe in the next two decades. (4)

Animate Cosmos > cosmos

Novosyadlyj, B., et al. The First Molecules in the Intergalactic Medium of the Dark Ages and Cosmic Dawn. arXiv:2205.03828. This contribution has an especial occasion because it is by Ukrainian scientists, along with a Chinese colleague. The coauthor credits are Ivan Franko National University of Lviv, Jilin University, P.R. China, and Institute of Radio Astronomy of NASU, Kharkiv. Even in the midst of absurd, malicious violence, our innate, deepest humane propensity to learn about this awesome and awful place proceeds apace. Here, our latest global collective acumen is able to reconstruct these primordial origins from universe to us Earthlings. Whatever great realization might at last illume and resolve, for the children’s sake?

We study the formation and destruction of the first molecules at the epochs of the Dark Ages and Cosmic Dawn to evaluate the luminosity of the protogalaxy groups (halos). A cosmological recombination is modeled by an effective three-level atom, while the chemistry is studied by thet basic kinetic equations. We show that the molecules H2 and HD are destroyed by photodissociation processes shortly before the full reionization in the inter-halo medium for all models of the first light. We estimated the brightness temperature in the rotational lines of H2, HD and HeH+ molecules at Dark Ages and Cosmic Dawn redshifts. (Abstract excerpt)

Animate Cosmos > cosmos

Urbanowski, K.. A Universe Born in a Metastable False Vacuum State Need Not Die. arXiv:2207.10965. We enter this far-ranging contribution by a University of Zielona Gora, Poland physicist among a flow of recent studies to register that our historic Earthuman, person/planet, scientific endeavors have just now gained abilities to hypothetically contemplate an entire ecosmos as a unitary whole. See also Quintessential Cosmological Tensions by Arslan Adil and Andreas Albrecht (UC Davis) at 2207.10235. Our planatural view is note how fantastic it is that over 400 moon to multiverse years a most minute but novice Earthwise knowsphere can achieve such vast vistas. While brave Poland persists, it is again eyed by a nuclear enemy. However into the 2020s can our phenomenal Ecosmo sapiens capacity, role and significance become known in time?

We try to find astro-parameters which can allow a universe born in a certain condition to survive and not collapse. Our findings involve inequalities linking the depending on time t instantaneous decay rate Γ(t) of the false vacuum and the Hubble value H(t). Our analysis shows that the instability of the electroweak vacuum does not have to result in the tragic fate of our Universe leading to its death. (Excerpt)

Animate Cosmos > cosmos

Vidotto, Francesca. Time, Space and Matter in the Primordial Universe. arXiv:2207.13722. We note this essay by a University of Western Ontario philosopher with a physics PhD from the University of Pavia so to witness and record the awesome abilities of a human person within a learned Earthwide sapiensphere to cast visionary, intellectual considerations across such cosmic reaches and substantial depths. We exemplary Earthuman beings might be well seen as participant quantifiers, describers, explainers that such a spacescape reality needs in order to re-present and acknowledge itself.

Time, space, and matter are categories of our reasoning, whose properties appear to be fundamental. However, these require a scrutiny as in the extreme regime of the primordial universe these present quantum properties. What does it mean for time to be quantum? What does it mean for space? Concepts such as the superposition of causal structures or the quantum granularity of space should be clarified to understand these cosmological physics. The answers to these questions, that touch the very concepts with which we organize our understanding of reality, require that we confront ourselves with empirical data, whence the universe itself is the best of possible laboratories. (Excerpt)

Animate Cosmos > cosmos > Quantum Cosmology

De Ronde, Christian. Quantum Theory Needs No “Interpretation” but “Theoretical Formal-Conceptual Unity.”. arXiv:2008. 00321. We cite this entry by a University of Buenos Aires and Free University of Brussels philosophical physicist to note a deepest issue and quandary that daunts this field of study. Since the late 20th century, an “anti-Realist” school, due much to its arcane opacity, contends that nothing more actually exists on its own. De Ronde then refers to recent writings by David Deutsch (search), along with those of Adan Cabello (this eprint site) for novel views by this flawed denial can be set aside for an intelligible phenomenal presence.

In regard, Lee Smolin often devotes half of a book (e.g., Time Reborn) to a similar sorting out so as to endorse the “Realism” opposite. And in 1990 I heard John Bell in person ask at a seminar: What does it mean that there is something quantum, and we are here? So this ultimate question of to be or not to be, nothing more or everything else, still begs to be resolved. As this website seeks to report and document, into 2022 by virtue of am Earthropic sapience, a positive, natural genesis, answer going forward may finally be affirmed.

Animate Cosmos > cosmos > Quantum Cosmology

McCormick, Katie. Particle Physicists Puzzle Over a New Duality. Quanta. August 1, 2022. A science journalist describes a confluence of recent empirical physics findings that infer a certain code-like relation in a gluon phase. A prime investigator Lance Dixon, a Stanford University astro-particle physicist, whose collegial paper is Folding Amplitudes into Form Factors: An Antipodal Duality in Physical Review Letters (128/111602, 2022). Dixon was joined by Anastasia Volovich and others which led to a “letters” identity for a particle’s energy and momentum. Our interest is how readily a genetic view is adopted so to consider that some similar correspondence might be going on.

A hidden link has been found between two seemingly unrelated particle collision outcomes. It’s the latest example of a mysterious web of mathematical connections between disparate theories of physics.

Dixon compares this new antipodal phenomena to the genetic code, in which four chemical building blocks combine to form the genes in a strand of DNA. Like the genetic code, the “DNA of particle scattering,” as he calls it, has rules about which combinations of words are allowed. Some of these rules follow from known physical or mathematical principles, but others seem arbitrary. In Dixon’s DNA analogy, the duality is like reading a genetic sequence backward and realizing that it encodes a totally new protein unrelated to the one encoded by the original sequence.

Animate Cosmos > cosmos > Quantum Cosmology

Philcox, Oliver and Salvatore Torquato. The Disordered Heterogeneous Universe: Galaxy Distribution across Length Scales. arXiv.2007.00519. Reviewed in ExoUniverse Studies, this entry is a good example of current quantum - cosmology frontiers. See also in this regard Beyond the Stardard Model Cocktail by Yann Gouttenoire at 2207.01633 for fantastic abilities for infinite quantifications that peoples seem to innately possess.

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