bluuebunny/crossref_metadata_2025_split huggingface dataset:
How an exact discrete symmetry can preserve black hole information or Turning a black hole inside out
Authors: Hooft Gerard’t 
Published: June 2023

Abstract
To apply the laws of General Relativity to quantum black holes, one first needs to remove the horizon singularity by means of Kruskal-Szekeres coordinates. This however doubles spacetime, which thereby is equipped with an exact binary symmetry. All particles near a black hole share the same symmetry, and conservation of this symmetry may completely remove the information paradox: the quantum black hole has no interior, or equivalently, the black hole interior is a quantum clone of the exterior region. These observations, totally overlooked in most of the literature on quantum black holes, resolve some issues concerning conservation of information. Some other problems do remain.
Cellular automaton for spinor gravity in four dimensions
Authors: Wetterich C 
Published: June 2023

Abstract
Certain fermionic quantum field theories are equivalent to probabilistic cellular automata, with fermionic occupation numbers associated to bits. We construct an automaton that represents a discrete model of spinor gravity in four dimensions. Local Lorentz symmetry is exact on the discrete level and diffeomorphism symmetry emerges in the naive continuum limit. Our setting could serve as a model for quantum gravity if diffeomorphism symmetry is realized in the true continuum limit and suitable collective fields for vierbein and metric acquire non-vanishing expectation values. The discussion of this interesting specific model reveals may key qualitative features of the continuum limit for probabilistic cellular automata. This limit obtains for a very large number of cells if the probabilistic information is sufficiently smooth. It is associated to coarse graining. The automaton property that every bit configuration is updated at every discrete time step to precisely one new bit configuration does no longer hold on the coarse grained level. A coarse grained configuration of occupation numbers can evolve into many different configurations with certain probabilities. This characteristic feature of quantum field theories can come along with the emergence of continuous space-time symmetries.
Chiral and flavor oscillations in lepton-antineutrino spin correlations
Authors: Bittencourt V A S V , Blasone M , Zanfardino G 
Published: June 2023

Abstract
We study the evolution of quantum correlations in a lepton-antineutrino pair, as produced in weak interactions (e.g. pion decay). Assuming an inital state entangled in the spins of the two particles, we show that both chiral and flavor (neutrino) oscillations affect spin correlations. Such corrections are relevant in the non-relativistic regime. In the second part we focused our attention on the weak process n + νe
→ p + e in which the results found in the previous sections could be observed.
Aspects of wave-particle complementarity in quantum delayed-choice experiments
Authors: Dieguez P R , Karthik H S 
Published: June 2023

Abstract
Quantum delayed-choice experiments are designed to probe the robustness of the complementarity principle. In this proceeding, we revisit the main ideas reported recently in Ref. [Commun. Phys. 5, 82 (2022)] concerning a setup (quantum-controlled reality experiment) that has the same final visibility as the quantum version of Wheeler’s delayed-choice arrangement. Besides the same final statistics, upon an operational criterion of physical realism, the authors claimed a different state of affairs for the wave-and-particle behavior in delayed-choice experiments. To this end, we put forward an analysis by employing the relative entropy of coherence to study how the local wave and particle coherences when the system is traveling inside the interferometer change accordingly to the final observed visibility.
Classical space from quantum condensates
Authors: Iorio A , Smaldone L 
Published: June 2023

Abstract
We review the boson transformation method to deal with spontaneous symmetry breaking in quantum field theory, focussing on how it describes the emergence of extended and classical objects in such quantum context. We then apply the method to the emergence of space itself, as an extended and classical object resulting from the evaporation of a quantum black hole. In particular, we show how classical torsion and curvature tensors can emerge as effects of an inhomogeneous Nambu–Goldstone boson condensation in vacuum, in E(3) invariant spinor models with symmetry breaking.
Analog simulations of early universe pre-heating and the back-reaction effect
Authors: Butera Salvatore , Carusotto Iacopo 
Published: June 2023

Abstract
We theoretically propose a ring-shaped, two-dimensional atomic Bose-Einstein condensate as analog model to investigate back-reaction effects during the pre-heating of the early universe. We study the out-of-equilibrium dynamics by which the inflaton field decays by parametrically exciting the vacuum fluctuations that initially populate the matter fields. By working at the level of the truncated Wigner approximation, our numerical simulations show how a signature of back-reaction beyond the semiclassical level is encoded in the effective friction experienced by the analog of the inflaton field, as well as in the spatial de-phasing of its oscillations and in the entanglement between the inflaton and matter fields degrees-of-freedoms.
The quantum waves of Minkowski space-time and the minimal acceleration from precanonical quantum gravity
Authors: Kanatchikov Igor V 
Published: June 2023

Abstract
We construct the simplest solutions of the previously obtained precanonical Schrödinger equation for quantum gravity, which correspond to the plane waves on the spin connection bundle and reproduce the Minkowski space-time on average. Quantum fluctuations lead to the emergence of the minimal acceleration a0
related to the range of the Yukawa modes in the fibers of the spin connection bundle. This minimal acceleration is proportional to the square root of the cosmological constant Λ generated by the operator re-ordering in the precanonical Schrödinger equation. Thus the mysterious connection between the minimal acceleration in the dynamics of galaxies as described by Milgrom’s MOND and the cosmological constant emerges as an elementary effect of precanonical quantum gravity. We also argue that the observable values of a0
and Λ can be obtained when the scale of the parameter ϰ introduced by precanonical quantization is subnuclear, in agreement with the previously established connection between the scale of ϰ and the mass gap in quantum SU(2) Yang-Mills theory.
Hints at a relationship between friction and relativistic physics
Authors: Minguzzi E 
Published: June 2023

Abstract
In applied mechanics Reye’s law (1860) establishes, via energy arguments, that the mass of the debris produced by dry friction in the contact of rigid bodies is proportional to the work done by friction forces. This result has long been used for the determination of the distribution of pressure in the contact of rigid bodies, and hence for the design of brakes. In this work I show that when bodies losing mass due to friction are treated, as they should, as variable mass systems, a relationship analogous to the relativistic mass formula is recovered. This result suggests that mathematical structures typical of relativistic physics could have been discovered prior to 1905, without making any reference to electromagnetism, group theory or the speed of light. Also this result could point to the existence of a physical theory depending on two constants, the speed of light (Reye’s constant) and a universal frictional deceleration with respect to an absolute frame. The limit of the theory for vanishing friction would give Special Relativity, as the absolute frame would become unobservable, while the limit for the speed of light going to infinity would lead to Aristotelian mechanics, i.e. a classical mechanics type theory presenting universal friction. Finally, I present a reference frame transformation that displays these features and I apply the theory to some open cosmological problems.
Coherent states for generalized uncertainty relations and their cosmological implications
Authors: Jizba P , Lambiase G , Luciano G G , Petruzziello L 
Published: June 2023

Abstract
We study coherent states associated with a generalized uncertainty principle (GUP). Our particular focus is on the negative deformation parameter β. We show that the ensuing coherent state can be identified with Tsallis’ probability amplitude with the non-extensivity parameter q being a monotonically increasing function of β. Furthermore, for β < 0, we reformulate the GUP in terms of a one-parameter class of Tsallis entropy based uncertainty relations, which are again saturated by the GUP coherent states. We argue that this combination of coherent states with Tsallis entropy offers a natural conceptual framework allowing to study the quasi-classical regime of GUP in terms of non-extensive thermostatistics. We bolster this claim by discussing a generalization of Verlinde’s entropic force and the ensuing implications in the late-inflation epoch. The corresponding dependence of the β parameter on the cosmological time is derived for the reheating epoch. The obtained β is consistent with both values predicted by string-theory models and the naturalness principle.
The Universe as a Telecommunication Network
Authors: Capurso Alessandro 
Published: June 2023

Abstract
We suggest a framework that models the universe as a Telecommunication Network, with several layers of abstraction, characteristic protocols and encoding schemes. We first define a fundamental network of atoms of space (Present foliation) as a toy model of the most elementary abstraction on spacetime. We describe a protocol to encode the information of distance, non-locality, and entanglement among these nodes. In this framework, we then conjecture the emergence of fermions from gradients of entanglement in the foliation, encoded as momenta in the fundamental network. We propose an interpretation of the asymmetry and of the half spin of matter in the model, towards a description of fermions as independent Network Entities, adjacent possible complexities from the most fundamental abstraction. We conclude our contribution considering several parallels between Nature and nodes in a layered network. The proposed framework seems a promising path to describe the emergence of a universe from information through the language of networks. We believe this perspective can connect several areas of research and deserves further investigation.
Evaluation of the perception of visual comfort, reading ability, color appearance, and global preference with respect to the CCT and the illuminance, of a university audience
Authors: Oscco F , Tonello G , Horn M 
Published: June 2023

Abstract
With the aim of knowing the perception of a university audience of four aspects of lighting: visual comfort, reading ability, color appearance and global preference, 40 volunteers were surveyed, sitting in front of a cubicle, which was illuminated by 12 different states of lighting. The lighting was a combination of illuminances of 100 lx, 200 lx, 400 lx or 600 lx, and a CCT of 3500 K, 5000 K, or 6500 K. The different states of lighting were presented one after another randomly. The results indicate that the CCT does not have a significant influence on visual comfort, reading ability, and global preference and that these aspects depend only on the illuminance: observers prefer illuminances of 400 lx and 600 lx, with no significant difference between them. The color appearance aspect is influenced by illuminance and CCT: observers prefer illuminance values of 400 lx or 600 lx combined with CCTs of 5000 K or 6500 K.
A study on the implementation of a circular economy in municipal solid waste management in the new capital city of Indonesia
Authors: Otivriyanti G , Fani A M , Yusuf N R , Haris K A , Alfatri P , Purwanta W 
Published: June 2023

Abstract
The new capital city of Indonesia is designed with the concept of a smart and sustainable city where waste management will implement a smart trash system with the concept of a circular economy. The key performance indicator (KPI) for waste management are 60% recycled and net zero emission. The waste management system is based on a projected population of 276,125 people in 2045 with a waste generation rate of 0.7 kg/cap/day. In this study, the calculation of KPI fulfillment was carried out in two scenarios. In the first scenario, 31 tpd of inorganic waste will be recycled, while 32 tpd of waste and 15 tpd of sludge will be processed in a waste-to-energy (WtE) incinerator. The second scenario is if the recycling ecosystem has not been established, the combustible waste will be burned in the WtE incinerator while the incombustible waste will be landfilled. WtE incinerator with a capacity of 2x50 tpd with an electrical output of 2x250 kW will recycle waste into energy. The global warming potential of both scenarios is negative, which means there is a net zero emission. Based on this study, both scenarios can meet KPI and have the potential to implement a circular economy.
The challenges in sustaining waste banks in Serang City: How far the circular economy can go?
Authors: Pratama R A , Wahyono S , Sahwan F L , Suryanto F , Suprapto  , Tilottama R D , Parlina I , Prasetiyadi  , Diyono  , Sarkiwan  , Arreza G 
Published: June 2023

Abstract
The existence of a waste bank is designed to reduce the municipal waste problem. However, not all regions can implement the waste banks program to deal with municipal solid waste. In 2019, Serang City managed only 51% of municipal waste out of 155,490 tons of waste/per year, including the contribution from the waste banks. This study aimed to determine the challenges of implementing waste banks and the impact of the circular economy in Serang. This study used a mixed approach which describes the results qualitatively-quantitatively. The study found: the positive response of the community to the existence of waste banks, the environmental motive behind the establishment of waste banks, waste banks in Serang dealing with infrastructures, human resources, and management, and the basic business model. Waste banks economically had not made a significant contribution to the members. The reduction ability was only 0.03% of total municipal solid waste. Another problem encountered was that cooperation with off-takers was not done on a contractual basis, which led to uncontrolled prices.
Potential quantity of liquid fuel from pyrolysis of plastic waste in Labuan Bajo
Authors: Haris K A , Tilottama R D , Robbani M H , Yuliani M 
Published: June 2023

Abstract
Labuan Bajo is one of the super-priority tourist destinations expected to attract more international tourists to increase foreign exchange. To make this a reality, a combination of programs that support tourism and master plans, including solid waste management, is needed. Private sectors have developed a circular economy to handle the plastic waste. However, this plan is constrained by the high cost of transporting plastic waste to recycling factories. Pyrolysis technology can be an alternative to treat solid waste without transporting it outside Labuan Bajo. A study of pyrolysis technology is needed before it can be applied, including the quantity of liquid fuel produced by the pyrolysis process. This liquid fuel can be utilised to fulfil the community demands, such as the demand for engine fuel. This research aimed to ascertain the potential quantity of liquid fuel produced by the pyrolysis process using plastic waste from Labuan Bajo. The calculation was carried out using two different scenarios: developed predictive theoretical model conversion and installed full-scale pyrolysis plant yield. The potential quantity of liquid fuel produced using the scenarios above is in the range of 3,075–2,763.83 L/day and can potentially supply 3.24–2.91% of Labuan Bajo’s liquid fuel demand.
Simulation of neutron shielding performance of Al-Cd alloy for radioactive waste container
Authors: Heriyanto K , Sudjadi U , Artiani P A , Rachmadetin J , Setyawan D 
Published: June 2023

Abstract
Neutron shielding material is necessary for the container of radioactive waste emitting neutrons, such as spent fuel from research reactor. This study aimed to determine the shielding performance of Al-Cd material for neutron radiation emitted by radioactive radiation. The calculations of neutron shielding were carried out using MNCP5 software. The Al-Cd shielding was simulated to withstand a neutron radiation source with 2.538×10−8 MeV energy and 4.5 MeV energy moderated with paraffin. The Al-Cd was simulated as a homogeneously-mixed alloy and Al coated with Cd. The results show that addition of Cd to Al increased the neutron shielding performance for thermal and fast neutron. With the addition of 10% Cd to Al, the neutron shielding performance increased by more than 90% for thermal neutron, and 30% for fast energy neutron moderated with 5 cm thick paraffin. It shows that Al-Cd alloy is potential for radioactive waste container which requires high neutron shielding performance.
Multi-criteria analysis for solid waste management system in Indramayu coastal area
Authors: Nurjayati R , Widyarsana I M W , Kurniasari O 
Published: June 2023

Abstract
Coastal area pollution in Indonesia does not only occur in one area but is spread over several points on the coastline of the Indonesian archipelago. Indramayu Regency, one of Indonesia’s coastal areas with significant marine resources and tourism assets, has experienced a worsening solid waste problem. This research activity was carried out in Cantigi District and Indramayu District; both areas were considered capable of representing the condition of Indramayu Regency which has various regional conditions but generally has resources and tourism assets in coastal areas. The analytical hierarchy process (AHP) is a decision-making model with multiple criteria that involves several alternatives that are selected based on consideration of all related criteria. In the analysis, five aspects became criteria: environmental, financial, social, technical, and institutional. This study aimed to formulate a solid waste management system in Indramayu Regency with the AHP approach. The study results are recommendations for solid waste management system alternatives that involve collaboration between the community and the regional technical implementation unit (UPTD). The alternatives are optimizing the function of the temporary waste shelters for waste reducing, reusing, and recycling (3R TPS) and socialization to the community about sorting waste activities.
Effect of rainfall on assessment of hydrologic sustainability in Citanduy sub-watersheds
Authors: Pramono I B , Basuki T M , Auliyani D 
Published: June 2023

AbstractHydrology is one of the criteria for monitoring and evaluation (monev) of watersheds management as stated in the Minister of Forestry Regulation Number P.61/Menhut-II/2014. So far, the use of various hydrological parameters for the monev of watersheds has not been evaluated whether these parameters truly reflect the condition of the watershed. This study aimed (1) to evaluate the effect of rainfall on the hydrological criteria of each sub-watershed, which include: flow regime coefficient, annual flow coefficient, sediment load, and water use index and (2) to evaluate the effect of rainfall on watershed carrying capacity. Regression analysis was used to see the relationship between annual rainfall and hydrological parameters used in watershed sustainability. This analysis was crucial to see the development of forest and land rehabilitation efforts in restoring degraded land. Data collection was carried out from 2008 to 2016 in each of the sub-watersheds of the Citanduy Watershed, namely Cijolang, Cikawung, Cimuntur, Ciseel, and Upper Citanduy. From this research, it is known that flow regime coefficient, annual flow coefficient, sediment load, water use index, and flood frequency are strongly influenced by rainfall so the result in evaluating watershed carrying capacity may vary depending on the rainfall. Besides being influenced by rainfall, flow regime coefficient, annual flow coefficient, and sediment load are also affected by land cover, while the slope affects the sediment load.
Benthic macroinvertebrates community to response environmental factors in a crater lake (Case study: Lake Menjer, Indonesia)
Authors: Imroatushshoolikhah  , Subehi L , Suryono T , Yoga G P , Sudarso J , Sari L , Ibrahim A , Samir O , Rustini H A 
Published: June 2023

Abstract
Lake Menjer is one of the crater lakes located in the highland of Central Java, Indonesia, which has received multiple stressors from anthropogenic activities. Benthic macroinvertebrates as a key indicator for water quality were little known there. Thus, this present research aimed to identify benthic macroinvertebrate structures and to understand the response of this community to water quality in Lake Menjer. Samplings were conducted twice, one week each in August and October 2019 at five sites. Sampling in August represented the condition of the dry season, while in October represented the rainy season. Some groups were identified into the family and others into the genus level. Water quality variables were measured directly on the site, including water clarity, pH, dissolved oxygen (DO), conductivity, total dissolved solids (TDS), and oxidation-reduction potential (ORP). Meanwhile, the level of total nitrate (TN), total phosphate (TP), nitrite, and chlorophyll-a were analyzed separately. A total of 4312 benthic macroinvertebrates composed of eleven taxa belonging to eight families were recorded, namely Chironomidae (22.85%), Tubificidae (73.50%), Lumbricullidae (0.68%), Thiariidae (0.21%), Planorbidae (0.45%), Lymnaeidae (0.21%), Unionidae (0.92%), and Corbiculidae (1.13%). The number of taxa varied between 1 to 3 in each station. Mollusk was the best-represented group with five families. Meanwhile, Tubificidae was shown as the predominant family in abundance both in August (3879 ind/m2) and October (2008 ind/m2). Shannon-Wiener index ranged nearly similar between the two seasons, 0.17 to 0.91 in August and 0.0 to 0.91 in October. ANOSIM CAP6 result illustrated that there was an insignificant difference in benthic macroinvertebrates abundance (P below 0.05) among sampling sites in Lake Menjer. This community was mostly homogenous. Bray-Curtis analysis using MVSP shows similarities in the taxa compositions between the sites. The analysis between water quality and macroinvertebrates which was performed by Canonical Correspondence Analysis shows that nine taxa tended to correlate with the level of TN, DO, and conductivity. Meanwhile, the other two taxa had a relationship with water clarity, temperature, level of TP, nitrite, and chlorophyll-a.