In-medium nucleon-nucleon potentials in configuration space

Beyer, Michael; Sofianos, S. A.

doi:10.1088/0954-3899/27/10/309

Cited by 5 publications

(9 citation statements)

References 35 publications

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“…The bound state vanishes because of the quasi-particle nature of the cluster. However, investigating the zeros of the two-body Jost function we found earlier that the quasi deuteron "survives" as a virtual bound state with different energies, depending on the densities above the dissociation line [34]. This is a similar state as the virtual 1 S 0 nucleon nucleon state at 70 keV.…”

Section: Cluster Propertiesmentioning

confidence: 79%

“…The fact that no bound states are possible doesn't mean that there are no correlations. Previously we found by analyzing the Jost function of the deuteron that as the deuteron moves towards lower binding energies and eventually crosses the continuum line (B 2 = 0) it exists as a virtual bound state on the unphysical energy sheet [34]. In its turn this means that particular correlations in the continuum can form deuterons, if the density becomes low enough (for a given temperature).…”

Section: Cluster Distributionmentioning

confidence: 97%

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Light clusters in nuclear matter of finite temperature

et al. 2004

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Abstract. We investigate properties and the distribution of light nuclei (A ≤ 4) in symmetric nuclear matter of finite temperature within a microscopic framework. For this purpose we have solved few-body Alt-Grassberger-Sandhas type equations for quasi-nucleons that include self-energy corrections and Pauli blocking in a systematic way. In a statistical model we find a significant influence in the composition of nuclear matter if medium effects are included in the microscopic calculation of nuclei. If multiplicities are frozen out at a certain time (or volume), we expect significant consequences for the formation of light fragments in a heavy ion collision. As a consequence of the systematic inclusion of medium effects the ordering of multiplicities becomes opposite to the law of mass action of ideal components. This is necessary to explain the large abundance of α-particles in a heavy ion collision that are otherwise largely suppressed in an ideal equilibrium scenario. PACS

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Section: Cluster Propertiesmentioning

confidence: 79%

Section: Cluster Distributionmentioning

confidence: 97%

Light clusters in nuclear matter of finite temperature

et al. 2004

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“…So far the formalism presented is rather general and for a typical many-body Hamiltonian (with generic two-body interactions V 2 ) has been proven useful for various domains of many-body physics (see [9]) including the calculation of correlations in nuclear systems at finite densities and temperatures [11][12][13][14][15][16][17][18][19]. At chemical potentials µ and temperatures T = 1/(k B β) averaging is due to a grand canonical ensemble in equilibrium, O = Tr{ρ 0 O}, where ρ 0 denotes the corresponding statistical operator expressed in terms of light front operators.…”

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confidence: 99%

Three-quark clusters at finite temperatures and densities

Beyer¹,

Mattiello²,

Frederico³

et al. 2001

Physics Letters B

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We present a relativistic three-body equation to study correlations in a medium of finite temperatures and densities. This equation is derived within a systematic Dyson equation approach and includes the dominant medium effects due to Pauli blocking and self energy corrections. Relativity is implemented utilizing the light front form. The equation is solved for a zero-range force for parameters close to the confinement-deconfinement transition of QCD. We present correlations between two- and three-particle binding energies and calculate the three-body Mott transition.Comment: 7 pages, 7 figure

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“…One can place bounds on the products of X couplings to the neutrino and electron in Eq. (1) from the cross sections of νe → νe andνe →νe scattering which have been determined in a number of low-energy experiments [18][19][20][21][22][23][24][25][26][27]. The accumulated data are generally consistent with SM expectations, but there is room left for new physics.…”

Section: Interactions and Cross Sectionsmentioning

confidence: 70%

Constraining nonstandard neutrino-electron interactions due to a new light spin-1 boson

Chiang

Faisel

Lin

et al. 2013

J. High Energ. Phys.

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We consider nonstandard interactions of neutrinos with electrons arising from a new light spin-1 particle with mass of tens of GeV or lower and couplings to the neutrinos and electron. This boson is not necessarily a gauge boson and is assumed to have no mixing with standard-model gauge bosons. Adopting a model-independent approach, we study constraints on the flavor-conserving and -violating couplings of the boson with the leptons from a number of experimental data. Specifically, we take into account the (anti)neutrino-electron scattering and e + e − → ννγ measurements and keep explicitly the dependence on the new particle mass in all calculations. We find that one of the two sets of data can provide the stronger constraints, depending on the mass and width of the boson. Also, we evaluate complementary constraints on its separate flavor-conserving couplings to the electron and neutrinos from other latest experimental results.

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In-medium nucleon-nucleon potentials in configuration space

Cited by 5 publications

References 35 publications

Light clusters in nuclear matter of finite temperature

Light clusters in nuclear matter of finite temperature

Three-quark clusters at finite temperatures and densities

Constraining nonstandard neutrino-electron interactions due to a new light spin-1 boson

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