Results 91 to 100 of about 299,841 (224)
Is the Zero-Point Energy Real? [PDF]
, 2002 I consider the arguments to show that the vacuum energy density should receive a large contribution from the zero-point energy. This is the cosmological constant problem, as it was originally framed. I suggest that the matter is interpretation-dependent,
Simon Saunders, Saunders, Simon
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Beyond Connection: Paradoxes of Psychedelic Resonance in Late Modernity
Future Humanities, Volume 4, Issue 2, November 2026.ABSTRACT This essay explores the enduring suspicion that psychedelic experiences are antithetical to the structural dynamic of modern societies through Hartmut Rosa's concepts of ‘resonance’ and ‘social acceleration’. Rosa's theoretical framework is particularly generative for studying the social meaning of contemporary psychedelia because it enables a
Mateo Sanchez Petrement
wiley +1 more source
Generation and evolution of cosmological second-order gravitational waves and density perturbations [PDF]
, 2022 At first-order, scalar, vector and tensor perturbations do not mix. This can happen from second-order on: scalar modes can be sourced by lower-order tensor modes and vice versa.
Giardiello, Serena
core
Communications PhysicsCosmology faces major observational challenges arising from the spatial and temporal scales involved. Analogue experiments that recreate cosmological scenarios in the laboratory offer a valuable means to probe and better understand the current tensions ...
Felipe A. Asenjo +2 more
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QNMs of charged black holes in AdS spacetime: A geometrical optics perspective
Physics Letters BWe investigate the quasinormal modes of the Reissner−Nordström anti−de Sitter black hole using the Penrose limit, motivated by the geometrical optics approximation.
Shubham Kala, Anik Rudra, Hemwati Nandan
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Light‐Imprinted Chirality in Nanomaterials: From Principles to Applications
Advanced Science, Volume 13, Issue 49, 3 September 2026.Light‐induced chirality represents a transformative paradigm for fabricating chiral nanostructures. This review provides a comprehensive framework encompassing light‐based strategies for imprinting and tuning chirality in nanomaterials, which guides researchers in harnessing light to create next‐generation functional materials.
Xinru Jin +3 more
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Human Psychopharmacology: Clinical and Experimental, Volume 41, Issue 5, September 2026.ABSTRACT Objective This review critically examines psilocybin, with particular emphasis on its pharmacokinetics and pharmacodynamics, including its serotonergic, neuroplastic, and anti‐inflammatory mechanisms. It integrates historical context, preclinical and clinical evidence, and evaluates emerging therapeutic potential, safety, microdosing practices,
José Norberto Vásquez‐Bonilla
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Cosmological implications of the Weyl geometric gravity theory
European Physical Journal C: Particles and FieldsWe consider the cosmological implications of the Weyl geometric gravity theory. The basic action of the model is obtained from the simplest conformally invariant gravitational action, constructed, in Weyl geometry, from the square of the Weyl scalar, the
Tiberiu Harko, Shahab Shahidi
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Cosmological perturbations without inflation [PDF]
Classical and Quantum Gravity, 2016 Abstract A particularly attractive feature of inflation is that quantum fluctuations in the inflaton field may have seeded inhomogeneities in the cosmic microwave background (CMB) and the formation of large-scale structure. In this paper, we demonstrate that a scalar field with zero active mass, i.e.
openaire +4 more sources
Interdisciplinary Materials, Volume 5, Issue 5, Page 834-867, September 2026.Vibrations in matter, from spider webs to molecules, water to flames, share a grammar with music. We propose that creativity emerges when constraints force expansion beyond existing possibilities. Selective imperfection restores balance, enabling invention.
Markus J. Buehler
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