11,406 research outputs found
Altruistic bequests and non-negative savings
This paper builds on the class of models studying the game interaction between an altruistic benefactor and a selfish recipient. An altruistic parent's bequest is transferred to his selfish son after the former's death and we assume that it is not a valid collateral for bank loans. This is equivalent to adding a non-negativity constraint on savings to the standard bequest model. A crucial mechanism at work is that the son's choice of a level of action can seriously dwarf his budget set. When Becker's resuit holds, the credit constraint places an upper bound on the strategie savings of the Samaritan's dilemma type. But the constraint on savings also causes the shrinkage of the validity domain of the Rotten Kid Theorem because it may lead both poor and rich heirs to behave unoptimally from the family point of view.Altruism, Liquidity constraints
Repulsive Casimir forces and the role of surface modes
The Casimir repulsion between a metal and a dielectric suspended in a liquid
has been thoroughly studied in recent experiments. In the present paper we
consider surface modes in three layered systems modeled by dielectric functions
guaranteeing repulsion. It is shown that surface modes play a decisive role in
this phenomenon at short separations. For a toy plasma model we find the
contribution of the surface modes at all distances.Comment: 13 pages, 3 figures, submitted to PR
Analogue Casimir Radiation using an Optical Para- metric Oscillator
We establish an explicit analogy between the dynamical Casimir effect and the
photon emission of a thin non-linear crystal pumped inside a cavity. This
allows us to propose a system based on a type-I optical parametric oscillator
(OPO) to simulate a cavity oscillating in vacuum at optical frequencies. The
resulting photon flux is expected to be more easily detectable than with a
mechanical excitation of the mirrors. We conclude by comparing different
theoretical predictions and suggest that our experimental proposal could help
discriminate between them.Comment: 7 pages, 2 figures, epl2 stylefile necessary to compil
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