Demol, P. Frosini, M. Tichai, A. Somà, V. Duguet, T.

In order to solve the A-body Schrödinger equation both accurately and efficiently for open-shell nuclei, a novel many-body method coined as Bogoliubov many-body perturbation theory (BMBPT) was recently formalized and applied at low orders. Based on the breaking of U(1) symmetry associated with particle-number conservation, this perturbation theory ...

Alam, Shadab Aviles, Alejandro Bean, Rachel Cai, Yan-Chuan Cautun, Marius Cervantes-Cota, Jorge L. Cuesta-Lazaro, Carolina Chandrachani Devi, N. Eggemeier, Alexander Fromenteau, Sebastien
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Shortly after its discovery, General Relativity (GR) was applied to predict the behavior of our Universe on the largest scales, and later became the foundation of modern cosmology. Its validity has been verified on a range of scales and environments from the Solar system to merging black holes. However, experimental confirmations of GR on cosmologi...

Johnson, Calvin W. Launey, Kristina D. Auerbach, Naftali Bacca, Sonia Barrett, Bruce R. Brune, Carl Caprio, Mark A. Descouvemont, Pierre Dickhoff, W. H. Elster, Charlotte
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This white paper reports on the discussions of the 2018 Facility for Rare Isotope Beams Theory Alliance (FRIB-TA) topical program "From bound states to the continuum: Connecting bound state calculations with scattering and reaction theory". One of the biggest and most important frontiers in nuclear theory today is to construct better and stronger b...

Litvinova, Elena Schuck, Peter

The two-fermion two-point correlation function in the pairing channel is discussed in the equation of motion framework. Starting from the bare two-fermion interaction, we derive the equation of motion for the two-fermion pair propagator in a strongly-correlated medium. The resulting equation is of the Dyson type with the kernel having a static and ...

Murgia, Riccardo Abellán, Guillermo F. Poulin, Vivian

Early Dark Energy (EDE) contributing a fraction $f_{\rm EDE}(z_c)\sim 10 \%$ of the energy density of the universe around $z_c\simeq 3500$ and diluting as or faster than radiation afterwards, can provide a resolution to the Hubble tension, the $\sim 5\sigma$ discrepancy between the $H_0$ value derived from early- and late-universe observations with...

Partmann, Christian Fidler, Christian Rampf, Cornelius Hahn, Oliver

Accurate cosmological simulations that include the effect of non-linear matter clustering as well as of massive neutrinos are essential for measuring the neutrino mass scale from upcoming galaxy surveys. Typically, Newtonian simulations are employed and the neutrino distribution is sampled with a large number of particles in order to beat down the ...

De Boer, Jan Godet, Victor Kastikainen, Jani Keski-Vakkuri, Esko

One of the key tasks in physics is to perform measurements in order to determine the state of a system. Often, measurements are aimed at determining the values of physical parameters, but one can also ask simpler questions, such as "is the system in state A or state B?". In quantum mechanics, the latter type of measurements can be studied and optim...

Medenjak, Marko De Nardis, Jacopo Yoshimura, Takato

We introduce non-trivial contributions to diffusion constant in generic many-body systems arising from quadratic fluctuations of ballistically propagating, i.e. convective, modes. Our result is obtained by expanding the current operator in the vicinity of equilibrium states in terms of powers of local and quasi-local conserved quantities. We show t...

Acharya, Shreyasi Adamova, Dagmar Adler, Alexander Adolfsson, Jonatan Aggarwal, Madan Mohan Aglieri Rinella, Gianluca Agnello, Michelangelo Agrawal, Neelima Ahammed, Zubayer Ahmad, Shakeel
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A measurement of dielectron production in proton-proton (pp) collisions at $\sqrt{s} = 13$ TeV, recorded with the ALICE detector at the CERN LHC, is presented in this Letter. The data set was recorded with a reduced magnetic solenoid field. This enables the investigation of a kinematic domain at low dielectron invariant mass $m_{\rm ee}$ and pair t...

Garcia Ruiz, R. F. Berger, R. Billowes, J. Binnersley, C. L. Bissell, M. L. Breier, A. A. Brinson, A. J. Chrysalidis, K. Cocolios, T. E. Cooper, B. S.
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Published in
Nature

Measurements of low-energy electronic states of radium monofluoride validate predictions of the use of this short-lived radioactive molecule in exploring fundamental physics and provide evidence of its suitability for laser cooling.