Results 61 to 70 of about 698,120 (289)

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Manifestly SL(2, R) Duality-Symmetric Forms in ModMax Theory

Journal of High Energy Physics, 2022
In this paper, we will investigate a manifestly SL(2, R)-invariant structure for the energy-momentum tensor of ModMax theory as a nonlinear modification of Maxwell electrodynamics which includes conformal invariance as well. In the context of this theory,
H. Babaei-Aghbolagh, Komeil Babaei Velni, Davood Mahdavian Yekta, H. Mohammadzadeh   +3 more
doaj   +1 more source

Decomposing Quantum Fields on Branes [PDF]

, 2000
We provide a method to decompose the two-point function of a quantum field on a warped manifold in terms of fields living on a lower-dimensional manifold. We discuss explicit applications to Minkowski, de Sitter and anti-de Sitter quantum field theories.
Bateman, Bateman, Bertola, Bertola, Bertola, Bertola, Bertola, Bertola, Birrell, Bros, Bros, Bros, Bros, Bunch, Deser, Gibbons, Giddings, Gradshteyn, Itzykson, Jacques Bros, Källen, Maldacena, Marco Bertola, Moschella, O'Neill, Randall, Reed, Richard Schaeffer, Streater, Titchmarsh, Ugo Moschella, Vittorio Gorini, Wald   +32 more
core   +2 more sources

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

Population Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi, Hidaka Kubo, Tokuya Ogawa, Hayate Omura   +3 more
wiley   +1 more source

Dimensionally continued Oppenheimer-Snyder gravitational collapse. I - solutions in even dimensions

, 1996
The extension of the general relativity theory to higher dimensions, so that the field equations for the metric remain of second order, is done through the Lovelock action.
Anderson Ilha, B. Zumino, C. Lanczos, C. Teitelboim, D. G. Boulware, D. Lovelock, D. M. Eardley, G. A. Mena-Marugán, J. R. Oppenheimer, J. T. Wheeler, José P. S. Lemos, M. Bañados, M. Bañados, N. Deruelle, R. C. Myers, S. W. Hawking, T. Regge, W. Israel, X. Li   +18 more
core   +2 more sources

Chiral 2D "Strange Metals" from N = 4 SYM [PDF]

, 2014
Familiar field theories may contain closed subsectors made out of only fermions, which can be used to explore new and unusual phases of matter in lower dimensions.
Berkooz, Micha, Narayan, Prithvi, Zait, Amir   +2 more
core   +2 more sources

Biological and technical complexities in analyzing extracellular vesicle immune interactions in B‐cell malignancies

FEBS Letters, EarlyView.
Extracellular vesicles (EVs) mediate intercellular communication in tumor immune microenvironments. However, their role in B‐cell malignancies remains poorly defined, owing to biological complexity and technical challenges in EV isolation and analysis.
Daniel Bachurski, Michael Hallek
wiley   +1 more source

An inverse mass expansion for the mutual information in free scalar QFT at finite temperature

Journal of High Energy Physics, 2020
We study the entanglement entropy and the mutual information in coupled harmonic systems at finite temperature. Interestingly, we find that the mutual information does not vanish at infinite temperature, but it rather reaches a specific finite value ...
Dimitrios Katsinis, Georgios Pastras
doaj   +1 more source

Comments on QCD3 and anomalies with fundamental and adjoint matter

Journal of High Energy Physics, 2022
’t Hooft anomaly matching is powerful for constraining the low energy phases of gauge theories. In 3d one common anomaly is the parity anomaly in a T-symmetric theory where one cannot gauge the global symmetry group without breaking the time-reversal ...
Nakarin Lohitsiri, Tin Sulejmanpasic
doaj   +1 more source