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1. Large-scale messengers from massive higher spin fields

   https://doi.org/10.1007/JHEP06(2018)154  

   Anber, Mohamed M. (January 2018, Journal of high energy physics)

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2. Hecate: Abuse Reporting in Secure Messengers with Sealed Sender

   Issa, Rawane; Alhaddad, Nicolas; Varia, Mayank (August 2022, 31st USENIX Security Symposium)

   End-to-end encryption provides strong privacy protections to billions of people, but it also complicates efforts to moderate content that can seriously harm people. To address this concern, Tyagi et al. [CRYPTO 2019] introduced the concept of asymmetric message franking (AMF) so that people can report abusive content to a moderator, while otherwise retaining end-to-end privacy by default and compatibility with anonymous communication systems like Signal’s sealed sender. In this work, we provide a new construction for asymmetric message franking called Hecate that is faster, more secure, and introduces additional functionality compared to Tyagi et al. First, our construction uses fewer invocations of standardized crypto primitives and operates in the plain model. Second, on top of AMF’s accountability and deniability requirements, we also add forward and backward secrecy. Third, we combine AMF with source tracing, another approach to content moderation that has previously been considered only in the setting of non-anonymous networks. Source tracing allows for messages to be forwarded, and a report only identifies the original source who created a message. To provide anonymity for senders and forwarders, we introduce a model of AMF with preprocessing whereby every client authenticates with the moderator out-of-band to receive a token that they later consume when sending a message anonymously. 

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3. From 5G Sniffing to Harvesting Leakages of Privacy-Preserving Messengers

   https://doi.org/10.1109/SP46215.2023.10179353  

   Ludant, Norbert; Robyns, Pieter; Noubir, Guevara (May 2023, IEEE)
4. Messengers from the Early Universe: Cosmic Neutrinos and Other Light Relics

   Green, Daniel and (May 2019, Bulletin of the American Astronomical Society)

   The hot dense environment of the early universe is known to have produced large numbers of baryons, photons, and neutrinos. These extreme conditions may have also produced other long-lived species, including new light particles (such as axions or sterile neutrinos) or gravitational waves. The gravitational effects of any such light relics can be observed through their unique imprint in the cosmic microwave background (CMB), the large-scale structure, and the primordial light element abundances, and are important in determining the initial conditions of the universe. We argue that future cosmological observations, in particular improved maps of the CMB on small angular scales, can be orders of magnitude more sensitive for probing the thermal history of the early universe than current experiments. These observations offer a unique and broad discovery space for new physics in the dark sector and beyond, even when its effects would not be visible in terrestrial experiments or in astrophysical environments. A detection of an excess light relic abundance would be a clear indication of new physics and would provide the first direct information about the universe between the times of reheating and neutrino decoupling one second later. 

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5. Messengers from the Early Universe: Cosmic Neutrinos and Other Light Relics

   Green, Daniel; Amin, Mustafa A.; Meyers, Joel; Wallisch, Benjamin; Abazajian, Kevork N.; Abidi, Muntazir; Adshead, Peter; Ahmed, Zeeshan; Ansarinejad, Behzad; Armstrong, Robert; et al (March 2019, Bulletin of the American Astronomical Society)

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