Fiiziksii
Seerota uumamaa wajjin yoo walsime, wanti tokko baay'ee ajaa'ibsiisaa ta'uun isaa dhugaa ta'uu isaa hin dhowwu.
— (1849)
Model classical dimension shan qabu tokko gravity quantize osoo hin godhin quantum behavior deebisee ijaaruu yaala
Barruun Scientific Reports tokko 4D + tau framework propose godha, keessatti ordinary spacetime parameter dabalataa jalatti evolve godha. Simulations fi model calculations keessatti, equilibrium keessatti Newtonian gravity deebisee argamsiisa, basic general-relativistic structure gara itti dhiyaata, EPR-type correlations fi double-slit-like interference worldline dynamics karaa reproduce godha. Bu'aan kun theoretical construction nama kakaasu dha; quantum gravity furame ykn standard quantum mechanics dogoggora dha jedhuuf experimental proof miti.
Orbit keessatti, soogiddi nyaataa cube duwwaa ta'ee guddate. Gravity brine jijjiire, salt miti
Sodium chloride crystals International Space Station irratti guddatan hollow, stepped cubes 2 hanga 8 millimetres across dabalatan. Papers transport explanation deeggaru: ordinary settling fi buoyancy-driven flow baay'ee suppress godhaman, early growth keessatti diffusion dominate godhe. Lattice salt gosa haaraa hin taane, experiments industrial process hin establish godhan.
Qorannoon cold-atom tokko 'problem of time' quantum gravity qorata — analog laaboraatoorii ta'ee, deebii ta'ee miti
Canonical quantum gravity keessatti, walqixxummaan Wheeler-DeWitt sa'aatii alaa events tartiibessu hin qabu: kun 'problem of time' jedhama. Qorannoon barreessaa tokko condensate Bose-Einstein isolate godhee, optical barrier haphii tokkoon sector hin ilaalamne fi ilaalametti qooda, entropy isaan gidduu yaa'u irraa sa'aatii keessaa ijaara. 'Entropic time' sun expansion fi recollapse sector ilaalame tartiibessa; walqixxummaan bu'a qabeessa regime daangaa gadi-aanaa qoratame keessatti data safarame deebisee uuma. Kun testbed relational-time ideas to'atame dha: 'big bang', 'big crunch' fi 'miniuniverse' label analog gaazii trap keessa jiruuf kennamaniidha, cosmology dhugaa miti; hojii kun problem of time ykn quantum gravity furuu isaa hin claim godhu.
Black holes seera thermodynamics hordofu — result haaraan black holes equilibrium irraa violently fagaatanitti seerota sana bal'isa
Bara 1970moota irraa eegalee, black holes seerota teermoodaynaamikii calaqqisiisan akka hordofan beekama; garuu bocni isaanii inni qulqulluun black holes madaallii keessatti tasgabbaa'anii jiran qofa irratti hojjeta ture. Barruun Physical Review Letters haaraan seera jalqabaa fi lammaffaa gara kutaalee horizonoota quasi-local ulaagaalee kutaa horizonii socho'aa guutanii fi madaallii irraa hangamiyyuu fagaatanitti — yeroo accretion, collapse fi marsaalee merger black hole baay'ee — bal'isa. Simulations horizonii quasi-local merger guutuu keessatti hordofu, garuu yeroo gabaabaa coalescence marsu kan inni kutaa horizonii socho'aa hin taane seerotni hanga ammaatti hin hammatan. Bu'uuri framework kanaa general relativity keessa jira; hurkaan baduu irratti hojii irra oolmaa semiclassical qaba; quantum gravity haaraa, ilaalcha yookaan furmaata rakkoo odeeffannoo black hole miti.
Model gravity entropy irratti hundaa'e tokko keessatti, local entropy density gadi bu'a yeroo total isaa ol ka'u
Barruun Physical Review D tokko Gravity From Entropy, proposed modified-gravity framework keessatti temperatures, pressures fi first law baasa. Late-time, low-curvature Friedmann approximation keessatti local entropy fi energy densities model gadi bu'u, expansion immoo total entropy ol kaasa. Calculation'n internally konkret dha, garuu conditional: Friedmann cosmologies full theory exact solutions miti; kun gravity entropy irraa dhufa jedhuuf observational evidence miti, dark energy safarameef explanation miti, quantum-gravity theory xumurame miti.
Maashiniin fusion tokko plasma isaa cuunfuun ho'ise — tarkaanfii dhugaa, garuu power plant miti
General Fusion LM26 plasma deuterium magnetized ta'e lithium liner keessaa cuunfamuun compress godhee ho'achuu isaa agarsiise — electron temperature isaa 3× ol guddisuun peak measured naannoo 0.72 keV (718 ± 80 eV, naannoo 8 million °C) ga'e — fi analysis company sanaa ho'ina keessaa baay'een compression irraa akka dhufe tilmaama, mechanism magnetized-target-fusion route irratti hirkatu. Kun engineering checkpoint dhugaa dha. Garuu shots 11 jalqabaa, company preprint peer review hin dabarre, temperature burning plasma barbaadu caalaa naannoo yeroo kudhan gadi, net energy, breakeven fi electricity homaa hin jiru. Mechanism agarsiifame; power plant hin ijaaramne.
Quantum mechanics real numbers qofaan barreeffamuu danda'a — rakkoon systems akkamitti walitti makaman keessatti jira
Bara 2021 result tokko real-number quantum mechanics experiment'n falsify godhamuu danda'a jedhe; experiments 2022 standard complex quantum theory deeggaran. Kun yeroo baay'ee imaginary numbers physically real ta'uu proof jedhamee gabaafame. Paper Physical Review Letters haaraan claim sana sharpen godha: real-number formulation systems akkamitti combine godhan irratti assumption adda, arguably physical caalaa, irratti ijaari; complex quantum mechanics predictions hunda, multipartite tests dabalatee, reproduce godha. Reading amanamaan complex numbers convenient dha, strictly necessary miti — experiments duraanii real theory specific tokko reject godhan, real numbers principle irratti miti. Kun foundations result theory dha, measurement haaraa miti.
Quantum memory tokko guddatee dhuma irratti fooyya'e — milestone dhugaa, garuu machine miti
Google Quantum AI jalqabaaf qulqullinaan surface-code quantum memory below threshold hojjechuu danda'u agarsiise: code distance 3 irraa 5 fi 7tti guddisuun logical error rate exponential ta'een gadi bu'e (steps lama hundaaf naannoo 2.14×), fi guddaan, distance-7 memory 101-qubit, physical qubit isaa keessaa isa gaarii caalaa yeroo dheeraa jiraate — beyond breakeven — error correction real time keessatti hojjetaa. Kun milestone engineering dhugaa dha. Garuu logical qubit tokko memory ta'ee hojjetu qofa, error rate algorithms dhugaa barbaadan irraa fagoo, logical operations hin raawwatamne, unexplained error floor jira, fi scaling orders of magnitude fuuldura qaba. Threshold ce'ame, computer hin dhiyaanne.
Muon-catalysed fusion: tarkaanfii reaction dhokataa yeroo jalqabaaf kallattiin argame — fusion energytti tarkaanfii miti
Quantum-sensor X-ray detector baay'ee sharp fayyadamuun, physicists muons gara frozen deuteriumitti ergan; yeroo jalqabaaf muonic molecules state 'resonance' yeroo gabaabaa keessa jiran kallattiin argan. Kun muons naannoo walakkaa pathway standard description muon-catalysed fusion keessaa hafee keessa darbu agarsiise. Mechanism formation yeroo dheeraaf proposed ta'e deeggara fi models field kanaa fooyyessuu gaafata. Reaction arguu fi hubachuu keessatti advance dhugaa dha — fusion energy source irratti tarkaanfii miti: efficiency hin fooyyessu, 'alpha sticking' bottleneck hin tuqu, deuterium keessatti hojjetame malee energy-relevant deuterium–tritium mix keessatti miti.