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Revising the cosmological constant problem through a fluid different from the quintessence

Physical Sciences and Technology, 2022
The role of a scalar field is reexamined through the introduction of a quasi-quintessence model. Unlike quintessence, in the quasi-quintessence model, the pressure of the scalar field does not depend on its kinetic energy. This research note provides an
Orlando Luongo
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The Criticism of Atheistic Evolution [PDF]

Comparative Theology, 2010
With regard to close relation between evolution theory and religious knowledge, and its prodigious influence on arising new schools in philosophy this paper firstly considers the outcome of Darwin’s theologian theory in brief secondly it talks about ...
Farah Ramin
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Environmental selection of the cosmological constant and electroweak scales

Journal of High Energy Physics, 2022
We investigate whether selfish/Goldilocks Higgs models can be extended to accomodate vacua with both the right Higgs mass and cosmological constant. Through the introduction of multiple four-form fields coupled with the Higgs scalar boson we find that ...
Matteo Moretti, Francisco G. Pedro
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Fine-tuning in the 2HDM

European Physical Journal C: Particles and Fields, 2022
The Two-Higgs Doublet Model (2HDM) is one of the most popular and natural extensions of the Higgs sector; but it has two potential fine-tuning problems, related to the electroweak (EW) breaking and the requirement of alignment with the SM Higgs boson. We
A. Bernal, J. A. Casas, J. M. Moreno
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Renormalizing the vacuum energy in cosmological spacetime: implications for the cosmological constant problem

European Physical Journal C: Particles and Fields, 2022
The renormalization of the vacuum energy in quantum field theory (QFT) is usually plagued with theoretical conundrums related not only with the renormalization procedure itself, but also with the fact that the final result leads usually to very large ...
Cristian Moreno-Pulido, Joan Solà Peracaula   +1 more
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Characterization and Assessment of Performance of Innovative Lime Mortars for Conservation of Building Heritage: Paimogo’s Fort, a Case Study

Applied Sciences, 2023
Along the Portuguese coastline, several military fortifications were built with the intention to protect the territory from the constant military threat from the sea.
Ana Rita Santos, Maria do Rosário Veiga, António Santos Silva   +2 more
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Tunable Magnetic and Optical Anisotropy in ZrO2‐Co Vertically Aligned Nanocomposites

Advanced Materials Interfaces, 2023
Metamaterials have gained great research interest in recent years owing to their potential for property tunability, multifunctionality, and property coupling.
Yizhi Zhang, Jiawei Song, Ping Lu, Julia Deitz, Di Zhang, Hongyi Dou, Jianan Shen, Zedong Hu, Xinghang Zhang, Haiyan Wang   +9 more
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Quantum vacuum energy in general relativity

European Physical Journal C: Particles and Fields, 2018
The paper deals with the scale discrepancy between the observed vacuum energy in cosmology and the theoretical quantum vacuum energy (cosmological constant problem).
Christian Henke
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FINE TUNING PROBLEM IN FIVE-DIMENSIONAL BRANE WORLD MODELS

Odessa Astronomical Publications, 2012
Fine tuning can be called a main disadvantage of the Randall-Sundrum model, representing the most popular brane world model, constructed quite artificially in the five-dimensional space-time.
S. H. Fakhr, M. Eingorn, A. Zhuk
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Proposed physical mechanism that gives rise to cosmic inflation

Scientific Reports, 2023
Early in the Universe a chemical equilibrium exists between photons and electron–positron ( $$e^{ - } e^{ + }$$ e - e + ) pairs. In the electron Born self-energy (eBse) model the $$e^{ - } e^{ + }$$ e - e + plasma falls out of equilibrium above a glass ...
Bruce M. Law
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