Scientists Achieve Time-Reversal Symmetry With Kagome Superconductor

A team at the Paul Scherrer Institute (PSI) in Switzerland has achieved a breakthrough with a Kagome superconductor (RbV3Sb5) that demonstrates time-reversal symmetry (TRS) breaking at a temperature of 175 Kelvin (-98°C or -144.67 °F). This record temperature suggests promising developments in quantum systems, which typically require ultra-low temperatures to prevent disruptions caused by thermal energy. Researchers believe the high-temperature TRS breaking in RbV3Sb5 can reduce energy needs for quantum technology, potentially accelerating its adoption.

Understanding Time-Reversal Symmetry in Quantum Technology

TRS implies that the fundamental laws remain the same when time flows backward in Physics. However, in materials like RbV3Sb5, TRS is broken, leading to unique quantum states that are challenging yet essential for developing advanced quantum devices. These unusual states result in the material behaving differently depending on the direction of time, an attribute that can be manipulated for enhanced control over quantum systems.

According to the study authors, this Kagome superconductor maintains superconductivity down to approximately two Kelvin but can sustain TRS-breaking quantum states at much higher temperatures, enhancing its suitability for real-world applications. PSI researchers, including Mahir Dzambegovic, highlighted the material's charge order state, where electrons form an organised pattern, producing a magnetic effect that breaks TRS at -144.67 °F.

Implications for Future Quantum Systems

The discovery of TRS breaking at such temperatures presents significant implications for quantum computing and storage. The ability to maintain these effects at higher temperatures could make quantum technologies more feasible outside of laboratory settings, according to PSI's team. Notably, the TRS-breaking properties of RbV3Sb5 are tunable, with effects varying based on the material's depth, from surface to core.

Future studies are expected to further explore the tunability of Kagome superconductors, particularly focusing on the interplay between superconductivity and TRS-breaking effects in RbV3Sb5. The study, published in Nature Communications, marks a step toward achieving practical quantum devices capable of operating in more energy-efficient conditions.

 

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Allu Arjun on Unstoppable OTT Release Date: When and Where to Watch it Online?

Allu Arjun, the acclaimed Telugu film star, is all set to appear on the popular talk show Unstoppable with NBK, hosted by veteran actor Nandamuri Balakrishna. Known for his recent success in Pushpa, Arjun's participation in the talk show is highly anticipated as he shares anecdotes about his career, inspiration, and his recent achievements. The special episode, which will be available on Aha on November 15, promises engaging moments between the two stars.

When and Where to Watch Unstoppable with NBK

The episode featuring Allu Arjun on Unstoppable with NBK will premiere on November 15 and will be accessible on the Aha streaming platform. The show, a favourite among Telugu audiences, brings Balakrishna and his guests into light-hearted yet thought-provoking conversations, providing fans with insights into their favourite stars.

Official Trailer and Plot of Allu Arjun's Unstoppable Episode

In the episode trailer, Allu Arjun speaks candidly about his inspirations, mentioning Megastar Chiranjeevi as a role model and sharing insights on his work alongside co-star Mahesh Babu. Additionally, a heartfelt appearance by his mother, Nirmala Garu, adds a unique personal touch, making this episode a sentimental viewing experience.

The trailer also teases playful banter between Balakrishna and Arjun, promising a mix of humour and warmth. He also talked about achieving a milestone with Pushpa, which earned him the National Award for Best Actor in 2023.

This marked a significant recognition for the Telugu film industry, as Arjun expressed pride in bringing this honour to his state. Pushpa 2: The Rule is scheduled for a grand release on December 5, with Arjun reprising his role as Pushpa Raj, alongside Rashmika Mandanna and Fahadh Faasil. This sequel will delve deeper into the protagonist's journey through the world of red sanders smuggling, building on the first film's success.

Cast and Crew of Unstoppable with NBK

Unstoppable with NBK features Nandamuri Balakrishna as the host, who engages his guests in candid discussions. In this episode, Allu Arjun joins as the special guest, with additional appearances by Arjun's family, adding a layer of personal connection to the conversation.

 

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Justice Sanjiv Khanna To Take Oath Today As 51st Chief Justice Of India

• President Droupadi Murmu will administer the oath of office to Justice Sanjiv Khanna at 10am.
• Justice Khanna will serve a six-month tenure as the Chief Justice of India and is expected to retire on May 13, 2025.
• Justice Khanna, 64, is the son of former Delhi High Court judge Justice Dev Raj Khanna and the nephew of prominent former Supreme Court judge H R Khanna.
• He started his legal career in 1983 as an advocate with the Delhi Bar Council. He was elevated to the Delhi High Court in 2005 and to the Supreme Court in 2019.
• He has experience in a wide range of legal fields, including constitutional law, taxation, arbitration, commercial law, and environmental law.
• He also worked as senior standing counsel for the Income Tax Department, representing the National Capital Territory of Delhi.
• Justice Khanna has been part of several landmark judgments -- including upholding the sanctity of Electronic Voting Machines (EVMs), and the scrapping of Article 370 that gave Jammu and Kashmir its special status.
• A bench he led also declared the electoral bonds scheme unconstitutional, underscoring the need for transparency in political funding.
• He was also part of the bench that granted interim bail to then Delhi Chief Minister Arvind Kejriwal ahead of the Lok Sabha election, enabling him to campaign for the May0June Lok Sabha election this year.
• Chief Justice DY Chandrachud, meanwhile, became emotional on his last working day. Reflecting on his tenure, he said, "There is no greater feeling than being able to serve those in need."

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Trump Speaks To Putin, Urges Him To Not Escalate War In Ukraine: Report

US President-elect Donald Trump has spoken to Russian President Vladimir Putin and urged him not to escalate the war in Ukraine, the Washington Post reported Sunday.

Trump held the call from his Mar-a-Lago estate in Florida on Thursday, just days after his stunning election victory over Democratic rival Kamala Harris, the report said.

The president-elect's representatives did not immediately respond when asked by AFP for comment.

The Post, citing several people familiar with the call who spoke on the basis of anonymity, reported that Trump had reminded Putin of America's sizable military presence in Europe.

They said he also expressed an interest in further conversations to discuss "the resolution of Ukraine's war soon."

Trump's election is seen as carrying the potential to upend the almost three-year Ukraine conflict, as he insists on a quick end to the fighting and casts doubt on Washington's multi-billion dollar support for Kyiv.

Ukrainian President Volodymyr Zelensky spoke with Trump on Wednesday, with the Republican's billionaire backer Elon Musk also notably joining them on the call.

Zelensky described the call as "excellent," saying that he and Trump had agreed to "maintain close dialogue and advance our cooperation."

The outgoing Democratic administration of President Joe Biden has confirmed that it will send as much aid as possible to Ukraine before Trump's inauguration on January 20.

On Sunday, Biden's National Security Advisor Jake Sullivan said the White House aims "to put Ukraine in the strongest possible position on the battlefield so that it is ultimately in the strongest possible position at the negotiating table."

This would include using the remaining $6 billion of funding for Ukraine available, Sullivan said.

'Losing your allowance'

The Russian government has given a cautious but mostly positive response to Trump's return, with Kremlin spokesman Dmitry Peskov saying Sunday: "The signals are positive... At least he's talking about peace, and not about confrontation."

During his campaign, Trump repeatedly vowed to quickly end the Ukraine war -- even before he is sworn into office -- but without detailing his thinking.

Trump and his allies have railed against US funding for Ukraine, while insinuating that it helps fund a corrupt pro-war nexus of defense companies and foreign policy hawks.

Trump's eldest son, Donald Trump Jr., shared a clip Saturday on Instagram which showed Zelensky standing next to the president-elect with a caption reading: "POV (point of view): You're 38 days from losing your allowance."

Any quick deal in Ukraine is expected to require Kyiv to cede some of the territory it has lost to Russian invaders in Ukraine's south and east.

A former adviser to Trump, Bryanb Lanza, told the BBC on Saturday that Ukraine had to give up any ambition on regaining Crimea, for instance, which was occupied by Russia in 2014.

He said the US priority was for "peace and to stop the killing", although the Trump transition team clarified that he was not speaking on behalf of the president-elect.

Kyiv, though facing a manpower shortage and uncertainty over US support, has steadfastly opposed giving up territory and its European allies and weapons suppliers such as Britain and France are known to be nervous about unilateral moves by Trump.

Zelensky has said that giving up land or meeting other demands from the Kremlin would only embolden the Kremlin and provoke more aggression, a view shared by many European allies.

Trump "briefly raised the issue of land" in his call with Putin, the Post reported, without further details.

In recent months, both sides in the war have made moves seen as possible efforts to gain leverage ahead of eventual negotiations, with Ukraine seizing a chunk of Russian territory and Moscow's troops making advances in Ukraine.

This weekend brought the biggest drone attacks yet from both sides.

Russia fired 145 drones at Ukraine overnight, Zelensky said, while Russia said it had downed 34 Ukrainian drones targeting Moscow on Sunday.

(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)

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Two Powerful Earthquakes Hit Cuba Within An Hour

Two powerful earthquakes rocked southern Cuba in quick succession on Sunday, US geologists said, as authorities said no tsunami alert was issued and no deaths immediately reported.

The US Geological Survey put the second, more powerful tremor at a magnitude of 6.8 and 14.6 miles (23.5 kilometers) deep, some 25 miles off the coast of Bartolome Maso, in southern Granma province.

It came just an hour after a first tremor, which the USGS put at a magnitude of 5.9, with the epicenter some nine miles beneath the ocean roughly 22 miles off Bartolome Maso. 

The state-run newspaper Granma said no deaths had been immediately reported, but that the quake had been felt throughout the Caribbean island nation.

"Here people quickly took to the streets because the ground moved very strongly," Andres Perez, a 65-year-old retiree who lives in downtown Santiago de Cuba, told AFP via telephone of the first quake. 

"It felt very strong really, my wife is a bundle of nerves," he added. 

The US tsunami warning system said no tsunami warning had been issued.

The tremor shook the island as it recovers from Hurricane Rafael, which hit the country's west as a Category 3 storm, leaving residents without power for two days. 

A 5.1 magnitude earthquake was recorded in October 2023 in Santiago de Cuba, without causing any damage. 

Another strong earthquake of magnitude 7.7 was recorded in January 2020 in the Caribbean Sea and was felt in several Cuban provinces, causing the evacuation of buildings in the capital Havana, with no damage reported.

(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)

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Chelsea vs Arsenal: Pedro Neto Scores Stunner, Both Teams Re-Enter Top 4

Chelsea vs Arsenal Highlights Premier League: Chelsea and Arsenal played out a fascinating 1-1 draw in an enthralling London derby Premier League game. The result saw both sides re-enter the Top 4 of the Premier League. Gabriel Martinelli scored from a tight angle to give Arsenal the lead in the second half. However, hosts Chelsea fought back, with Pedro Neto scoring his first goal for the club. He equalised with a sensational long-range goal. Star players Bukayo Saka and Cole Palmer did not have a big impact on the game. The two sides sit on 19 points each, nine behind league leaders Liverpool and four behind Manchester City. (MATCH CENTER)

Here are the LIVE Updates of Chelsea vs Arsenal LIVE Score, Premier League 2024-25 Football, straight from Stamford Bridge, West London:

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"Unknown To Any Civilised System": Supreme Court On 'Bulldozer Justice'

The full text of Chief Justice of India DY Chandrachud's recent judgment on illegal demolitions in Uttar Pradesh mentions "justice through bulldozers is unknown to any civilised system of jurisprudence."

The Supreme Court on Wednesday had pulled up the UP government for an "illegal" demolition in 2019 while issuing directions to all states and Union Territories (UT) on the procedure to be followed during road-widening and removal of encroachments.

A bench of Chief Justice Chandrachud and Justices JB Pardiwala and Manoj Misra had also directed the UP government to pay Rs 25 lakh compensation to the man whose house was razed in 2019 for a road-widening project.

"... There is a grave danger that if high-handed and unlawful behaviour is permitted by any wing or officer of the state, demolition of citizens' properties will take place as a selective reprisal for extraneous reasons," Chief Justice Chandracud said in the order.

"Citizens' voices cannot be throttled by a threat of destroying their properties and homesteads. The ultimate security which a human being possesses is to the homestead. The law does not undoubtedly condone unlawful occupation of public property and encroachments," he said.

"Bulldozer justice is simply unacceptable under the rule of law. If it were to be permitted, the constitutional recognition of the right to property under Article 300A would be reduced to a dead letter," the Supreme Court said.

The Supreme Court had then directed the UP chief secretary to conduct an inquiry into the matter pertaining to a house in Maharajganj district and take suitable action. The bench elaborated on the steps that a state or its instrumentality must undertake before taking action in pursuance to a road-widening project.

In case an encroachment was found, the state must issue notice to the encroacher to remove it and if the correctness and validity of the notice was objected to, the state would issue a "speaking order" keeping in mind the principles of natural justice, the Supreme Court said.

In a scenario of the objection being rejected, a reasonable notice would be given to the person against whom the adverse action was proposed, to remove the encroachment, it added.

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