33,092 research outputs found
Chaotic behavior of the Compound Nucleus, open Quantum Dots and other nanostructures
It is well established that physical systems exhibit both ordered and chaotic
behavior. The chaotic behavior of nanostructure such as open quantum dots has
been confirmed experimentally and discussed exhaustively theoretically. This is
manifested through random fluctuations in the electronic conductance. What
useful information can be extracted from this noise in the conductance? In this
contribution we shall address this question. In particular, we will show that
the average maxima density in the conductance is directly related to the
correlation function whose characteristic width is a measure of energy- or
applied magnetic field- correlation length. The idea behind the above has been
originally discovered in the context of the atomic nucleus, a mesoscopic
system. Our findings are directly applicable to graphene.Comment: 10 pages, 5 figures. Contribution to: "4th International Workshop on
Compound-Nuclear Reactions and Related Topics (CNR*13)", October 7-11, 2013,
Maresias, Brazil. To appear in the proceeding
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The Effects of Marriage Equality in Massachusetts: A survey of the experiences and impact of marriage on same-sex couples
May 17th, 2009 marks the 5th year of marriage equality in the state of Massachusetts. To mark this anniversary, the Massachusetts Department of Public Health conducted the largest survey to date of married same-sex couples, the Health and Marriage Equality in Massachusetts (HMEM) survey. During the past year, four other states have extended marriage to same-sex couples and several other states are considering marriage legislation. The HMEM data allows us to address important questions that arise as other states consider whether to extend marriage to same-sex couples. The data provides answers to several key questions: Who is getting married? Why are same-sex couples getting married? What impact has marriage had on same-sex relationships? And, what impact has marriage had on the children of same-sex couples
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The Fiscal Impact of Extending Federal Benefits to Same-Sex Domestic Partners
This report finds that offering health and other benefits to the same-sex partners of federal employees would add 675 million, a small percentage of the federal budget. The report also takes into account the added federal income taxes that will be paid by federal employees if they sign a partner up for health insurance. It estimates the cost of including partners in retirement benefits, work injury and death compensation, and travel and relocation expenses. Many benefits offered to federal employees, such as life insurance and family and medical leave, can be offered to domestic partners at no additional cost to the federal government
Weak decays of medium and heavy Lambda-hypernuclei
We have made a new evaluation of the Lambda decay width in nuclear matter
within the Propagator Method. Through the Local Density Approximation it is
possible to obtain results in finite nuclei. We have also studied the
dependence of the widths on the N-N and Lambda-N short range correlations.
Using reasonable values for the parameters that control these correlations, as
well as realistic nuclear densities and Lambda wave functions, we reproduce,
for the first time, the experimental non-mesonic widths in a wide range of mass
numbers (from medium to heavy hypernuclei).Comment: 22 pages, including 5 figure
Magnetic order in Ce0.95Nd0.05CoIn5: the Q-phase at zero magnetic field
We report neutron scattering experiment results revealing the nature of the
magnetic order occurring in the heavy fermion superconductor Ce0.95Nd0.05CoIn5,
a case for which an antiferromagnetic state is stabilized at a temperature
below the superconducting transition one. We evidence an incommensurate order
and its propagation vector is found to be identical to that of the magnetic
field induced antiferromagnetic order occurring in the stoichiometric
superconductor CeCoIn5, the so-called Q-phase. The commonality between these
two cases suggests that superconductivity is a requirement for the formation of
this kind of magnetic order and the proposed mechanism is the enhancement of
nesting condition by d-wave order parameter with nodes in the nesting area.Comment: submitted to Phys. Rev. Lett. on June 30th, 201
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