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"Demons"
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The last great heir
Rival heirs, Merriment and Rue, prepare for a customary duel on their thirteenth birthday to determine the next ruler, but a shared enemy compels them to work together to save their loved ones.
CHILDBOOK
Catholicism and the Decline of Magic: Gabriele Amorth and the “Unbelieving Catholic World”
Famed for his role as an exorcist in the diocese of Rome, in later life Gabriele Amorth (1925–2016) wrote a series of works describing his ministry and making the case for the need to restore the exorcistate. In these works, Amorth sought to explain why exorcisms were no longer routinely performed and attributed this development to local bishops who no longer believed in the devil as a real and active presence in the created order. In so doing, he offered a Catholic priest’s account of the process of disenchantment, or the decline of magic in the modern world. While this is often associated with the rise of modern science, which offered an alternative world view, Amorth argues that science is, and has always been, compatible with exorcism. The failure of belief in both the devil and exorcism Amorth decries was, he suggests, the result of misguided biblical hermeneutics influenced not by science but by a misguided scientism.
Journal Article
Jujutsu kaisen
Although Yuji Itadori looks like your average teenager, his immense physical strength is something to behold! Every sports club wants him to join, but Itadori would rather hang out with the school outcasts in the Occult Club. One day, the club manages to get their hands on a sealed cursed object, but little do they know the terror they'll unleash when they break the seal.
BOOK
A quantum Szilard engine without heat from a thermal reservoir
We study a quantum Szilard engine that is not powered by heat drawn from a thermal reservoir, but rather by projective measurements. The engine is constituted of a system , a weight , and a Maxwell demon , and extracts work via measurement-assisted feedback control. By imposing natural constraints on the measurement and feedback processes, such as energy conservation and leaving the memory of the demon intact, we show that while the engine can function without heat from a thermal reservoir, it must give up at least one of the following features that are satisfied by a standard Szilard engine: (i) repeatability of measurements; (ii) invariant weight entropy; or (iii) positive work extraction for all measurement outcomes. This result is shown to be a consequence of the Wigner-Araki-Yanase theorem, which imposes restrictions on the observables that can be measured under additive conservation laws. This observation is a first-step towards developing 'second-law-like' relations for measurement-assisted feedback control beyond thermality.
Journal Article
Identifying functional thermodynamics in autonomous Maxwellian ratchets
We introduce a family of Maxwellian Demons for which correlations among information bearing degrees of freedom can be calculated exactly and in compact analytical form. This allows one to precisely determine Demon functional thermodynamic operating regimes, when previous methods either misclassify or simply fail due to approximations they invoke. This reveals that these Demons are more functional than previous candidates. They too behave either as engines, lifting a mass against gravity by extracting energy from a single heat reservoir, or as Landauer erasers, consuming external work to remove information from a sequence of binary symbols by decreasing their individual uncertainty. Going beyond these, our Demon exhibits a new functionality that erases bits not by simply decreasing individual-symbol uncertainty, but by increasing inter-bit correlations (that is, by adding temporal order) while increasing single-symbol uncertainty. In all cases, but especially in the new erasure regime, exactly accounting for informational correlations leads to tight bounds on Demon performance, expressed as a refined Second Law of thermodynamics that relies on the Kolmogorov-Sinai entropy for dynamical processes and not on changes purely in system configurational entropy, as previously employed. We rigorously derive the refined Second Law under minimal assumptions and so it applies quite broadly-for Demons with and without memory and input sequences that are correlated or not. We note that general Maxwellian Demons readily violate previously proposed, alternative such bounds, while the current bound still holds. As such, it broadly describes the minimal energetic cost of any computation by a thermodynamic system.
Journal Article
Chapter 5: EMPOUSA, ALSO CALLED ONOSKELIS
[...]a magical papyrus describes a ritual that was able to force someone or something to do what the pratictioner wanted by putting him or it at the center of a magical ring.23 In this case the palindromon to be written was IAEÔBAPHRENEMOUNOTHILARIKRIPHIAEUEAIFIRKIRALITHONUOMENERPHABÔ EAI Recipes of two magical papyri state that this magical word was equal to the name of the Jewish god24 and to the snake ouroboros, which eats its own tail.25 This magical gem was typically used for love magic.
Journal Article
Landauer’s Principle in a Quantum Szilard Engine without Maxwell’s Demon
Quantum Szilard engine constitutes an adequate interplay of thermodynamics, information theory and quantum mechanics. Szilard engines are in general operated by a Maxwell’s Demon where Landauer’s principle resolves the apparent paradoxes. Here we propose a Szilard engine setup without featuring an explicit Maxwell’s demon. In a demonless Szilard engine, the acquisition of which-side information is not required, but the erasure and related heat dissipation still take place implicitly. We explore a quantum Szilard engine considering quantum size effects. We see that insertion of the partition does not localize the particle to one side, instead creating a superposition state of the particle being in both sides. To be able to extract work from the system, particle has to be localized at one side. The localization occurs as a result of quantum measurement on the particle, which shows the importance of the measurement process regardless of whether one uses the acquired information or not. In accordance with Landauer’s principle, localization by quantum measurement corresponds to a logically irreversible operation and for this reason it must be accompanied by the corresponding heat dissipation. This shows the validity of Landauer’s principle even in quantum Szilard engines without Maxwell’s demon.
Journal Article
Stochastic thermodynamics of relativistic Brownian motion
Physical scenarios that require a relativistic treatment are ubiquitous in nature, ranging from cosmological objects to charge carriers in Dirac materials. Interestingly all of these situations have in common that the systems typically operate very far from thermal equilibrium. Therefore, if and how the framework of stochastic thermodynamics applies at relativistic energies is a salient question. In the present work we generalize the notions of stochastic heat and work for the relativistic Langevin equation and derive the fluctuation theorems without and with feedback. For processes with feedback we consider the ramifications of the lack of simultaneity of events in the inertial frames of observer and Brownian particles, and we argue that the framework of absolute irreversibility is instrumental to avoid acausal considerations. The analysis is concluded with a few remarks on potential experimental applications in graphene.
Journal Article