Results 61 to 70 of about 6,995,740 (255)
Singular bifurcations and regularization theory
Physical Review ESeveral nonlinear and nonequilibrium driven as well as active systems (e.g. microswimmers) show bifurcations from one state to another (for example a transition from a non motile to motile state for microswimmers) when some control parameter reaches a critical value.
Alexander Farutin, Chaouqi Misbah
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Past singularities in phantom theories [PDF]
EAS Publications Series, 2008 4 pp. Uses eas.cls. Spanish Relativity Meeting ERE 2007: Relativistic Astrophysics and Cosmology. Eds: A. Oscoz, E. Mediavilla, M. Serra-Ricart. EAS Publications Series, Volume 30, EDP Sciences, Les Ulis, 131-136 (2008)
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Stable singularities in string theory [PDF]
Communications in Mathematical Physics, 1996 We study a topological obstruction of a very stringy nature concerned with deforming the target space of an $N=2$ non-linear \sm. This target space has a singularity which may be smoothed away according to the conventional rules of geometry but when one studies the associated conformal field theory one sees that such a deformation is not possible ...
Aspinwall, Paul S. +2 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Together, leukemia and lymphoma account for 38.7% of newly diagnosed pediatric cancer cases in the United States each year. Many caregivers utilize online resources to inform medical health decisions. Understanding the readability of these materials is critical to ensuring comprehensible patient education.
Chloe Strege +6 more
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The Modelling and Control of a Singular Biological Economic System in a Polluted Environment
Discrete Dynamics in Nature and Society, 2016 A singular biological economic model with harvesting and stage structure is presented. The local stability of equilibriums of the system is investigated when the economic profit parameter is zero, and the conditions of the singularity induced bifurcation
Yi Zhang, Yueming Jie, Xinyou Meng
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Discrete gauging in six dimensions
Journal of High Energy Physics, 2018 When n M5 branes coincide on an A type singularity, ℂ2 /ℤ k , there is a multitude of tensionless strings which arise in the spectrum. The low energy theory when all M5 branes are separated at the singularity is given by a linear quiver with parameters n
Amihay Hanany, Gabi Zafrir
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Quantum dynamics corresponding to the chaotic BKL scenario
European Physical Journal C: Particles and Fields, 2023 We quantize the solution to the Belinski– Khalatnikov–Lifshitz (BKL) scenario using the integral quantization method. Quantization smears the gravitational singularity, preventing its localization in the configuration space.
Andrzej Góźdź +2 more
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Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
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Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
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Condensates and singularities in string theory [PDF]
Nuclear Physics B, 1994 We derive a class of solutions to the string sigma-model equations for the closed bosonic string. The tachyon field is taken to form a constant condensate and the beta-function equations at one-loop level are solved for the evolution of the metric and the dilaton. The solutions represent critical string theories in arbitrary dimensions. The spectrum of
Kostelecký, V. Alan, Perry, Malcolm J.
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