3,111 research outputs found
Lepton flavor violation in lopsided models and a neutrino mass model
A widely adopted theoretical scheme to account for the neutrino oscillation
phenomena is the see-saw mechanism together with the ``lopsided'' mass
matrices, which is generally realized in the framework of supersymmetric grand
unification. We will show that this scheme leads to large lepton flavor
violation at low energy if supersymmetry is broken at the GUT or Plank scale.
Especially, the branching ratio of already exceeds the present
experimental limit. We then propose a phenomenological model, which can account
for the LMA solution to the solar neutrino problem and at the same time predict
branching ratio of below the present limit.Comment: 15 pages, 4 figure
Optimal cooperation-trap strategies for the iterated Rock-Paper-Scissors game
In an iterated non-cooperative game, if all the players act to maximize their
individual accumulated payoff, the system as a whole usually converges to a
Nash equilibrium that poorly benefits any player. Here we show that such an
undesirable destiny is avoidable in an iterated Rock-Paper-Scissors (RPS) game
involving two players X and Y. Player X has the option of proactively adopting
a cooperation-trap strategy, which enforces complete cooperation from the
rational player Y and leads to a highly beneficial as well as maximally fair
situation to both players. That maximal degree of cooperation is achievable in
such a competitive system with cyclic dominance of actions may stimulate
creative thinking on how to resolve conflicts and enhance cooperation in human
societies.Comment: 5 pages including 3 figure
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