Neutrinos as probes of Lorentz invariance

Neutrinos can be used to search for deviations from exact Lorentz invariance. The worldwide experimental program in neutrino physics makes these particles a remarkable tool to search for a variety of signals that could reveal minute relativity violations. This paper reviews the generic experimental signatures of the breakdown of Lorentz symmetry in the neutrino sector.Comment: 10 pages, 4 figures; Review article published in the special issue "Through Neutrino Eyes: The Search for New Physics" of Advances in High Energy Physic

Lorentz and CPT violation in neutrino oscillations

Neutrino oscillations in the presence of Lorentz violation can present novel observable signals in both long- and short-baseline experiments. In this talk we describe the theory and its different regimes depending on properties of the experiments. CPT violation, its systematic search and possible connections to latest results are also presented.Comment: Presented at the Fifth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 28-July 2, 201

Testing Lorentz and CPT invariance with neutrinos

Neutrino experiments can be considered sensitive tools to test Lorentz and CPT invariance. Taking advantage of the great variety of neutrino experiments, including neutrino oscillations, weak decays, and astrophysical neutrinos, the generic experimental signatures of the breakdown of these fundamental symmetries in the neutrino sector are presented.Comment: 6 pages; accepted for publication in Symmetr

A Boomtown at Risk: Austin's Mounting Public Pension Debt

The increase in Austin's pension debt over the last decade is due in part to the fact that as the population grew, demand for public services increased and the city added more than 1,000 public employees between 2010 and 2015. As the cost of providing benefits rose, the city failed to keep up with contributions to the system—skipping nearly $170 million in payments to the Employees' Retirement Plan, which is the city's largest retirement plan, over eight years. At the same time, it suffered a series of investment shortfalls system wide, which compounded the effect of the missed contributions and led to a widening gap between assets and liabilities.Despite the fact that the city is paying more and more into the plans each year, unfunded liabilities are continuing to rise. In fact, Austin spends more than half of its pension payments on debt—rather than benefits for public workers. Yet even these payments might not be sufficient to pay off the unfunded liabilities, and if the city earns less than expected on its investments, debt will rapidly rise.The brief explains that the city must take immediate steps to pay down the unfunded liabilities in order to improve the stability of its pension plans. Local leaders in Austin should take note of the pension crisis that is unfolding in Dallas. Two years ago, Dallas' pension system was in a similar position to the one that Austin is currently in. However, Dallas' pension debt doubled to$4 billion and its funded ratio plummeted to 56 percent after the plan administrators made a series of reckless decisions that have pushed the city's largest plan, the police and fire fund, to the brink of bankruptcy.The situation in Dallas should provide a cautionary example of how quickly debt can spiral out of control. In the brief, McGee and Diaz Aguirre call on Austin's leaders to make the changes necessary to ensure that the city is able to uphold its retirement promises to public workers. The authors present a number of recommendations that would help stabilize the system and address the plan's underlying structural flaws, including:Making adequate funding non-negotiable and committing to pay down current unfunded liabilities in 30 years or less.Establishing prudent and realistic funding and investment policies.Establishing local control of the pension fund in order to improve oversight and accountability.Consider enrolling new workers in plans that are simpler and easier to manage, like Defined Contribution or Cash Balance plans