Chiral Bargmann–Wigner equations for spin-1 massive fields

A generalization of the original Bargmann–Wigner equations for spin-1 massive fields is employed, taking fully into account all internal degrees of freedom associated with the underlying chiral bases of the constituent spin-1/2 representations. Through the specification of a chiral basis, the chiral Bargmann–Wigner equations are reduced to a Proca-like form coupled by chirality to an auxiliary equation for a spin-0 massive field. The coupling derived is a new phenomenon whose physical implications are discussed in the context of identification of this field with the Higgs field and dark matter.

Testing massive-field modifications of gravity via gravitational waves

The direct detection of gravitational waves now provides a new channel for testing gravity theories. Despite that the parametrized post-Einsteinian framework is a powerful tool to quantitatively investigate the effects of modifications to gravity theory, the gravitational waveform in this framework is still extendable. One such extension is to take into account the gradual activation of dipole radiation due to massive fields, which are still only very weakly constrained if their mass $m$ is greater than $10^{-16}$$\,$eV from pulsar observations. Ground-based gravitational-wave detectors (LIGO, Virgo, and KAGRA) are sensitive to this activation in the mass range $10^{-14}$$\,$eV $\lesssim m \lesssim 10^{-13}$$\,$eV. Hence, we discuss a dedicated test for dipole radiation due to a massive field using the LIGO/Virgo collaboration’s open data. In addition, assuming Einstein dilaton Gauss Bonnet (EdGB) type coupling, we combine the results of the analysis of binary black hole events to obtain 90% confidence level constraints on the coupling parameter $\alpha_{\rm EdGB}$ as $\sqrt{\alpha_{\rm EdGB}} \lesssim 2.47$$\,$km for any mass less than $6 \times 10^{-14}$$\,$eV for the first time, including $\sqrt{\alpha_{\rm EdGB}} \lesssim 1.85$$\,$km in the massless limit.

V

This chapter deals with Sahajanand’s life after the Bhumihar Brahmin Mahasabha held at Balia. He had been touched by the behaviour of Bhumihars vis-a-vis Maithil, Kanyakubja and Sarjupari Brahmins. He decided to prove that Bhumihars are as good as any other Brahmins. To that end, he along with some of his sannyasi friends launched massive field studies and proved that Bhumihars have matrimonial relations with all others Brahmins, and at certain places they were also engaged in Purohiti work. He settled down at a village called Kotwa Narayanpur in eastern Uttar Pradesh. Once again a new chapter of his life began as he started reading both Hindi and English newspapers published from Patna. Thus slowly but surely, he was drawn to the political movement under the leadership of Mahatma Gandhi.

Testing Overall and Synergistic Campaign Effects in a Partisan Statewide Election

Although studies based on field experiments and large- N surveys have enhanced our understanding of how campaigns affect U.S. elections, few of these projects have (1) considered the synergistic effects of distinct aspects of the campaign, (2) focused on statewide, partisan elections, or (3) considered the durability of any estimated campaign effects. We rely on a massive field experiment from the 2014 Texas gubernatorial campaign to assess the individual, synergistic, and collective impact of a variety of outreach modes on the electorate. The data demonstrate some durable synergistic and overall campaign effects on voters’ attitudes toward the sponsoring candidate, with lesser effects on turnout. In addition, while the results indicate that television is rightly considered the most effective mover of voters, radio and Internet advertising also have notable effects and may, in fact, deliver a better return on investment.