By Howard Schneider

WASHINGTON (Reuters) - In the month since Federal Reserve Chair Jerome Powell laid down a hard line on inflation, stocks have suffered double-digit losses, chasms have opened in global currency markets, and yields on the safest U.S. government debt have surged to their highest levels since the dark days of the financial crisis nearly a decade and a half ago.

U.S. central bank officials have been clear, however, just as Powell was in his remarks at the Jackson Hole economic conference in Wyoming and following the central bank's policy meeting last week: There's no rescue coming.

If the long-touted "Fed put" - a perceived tendency to run to the aid of financial markets - isn't dead, it has been put in deep hibernation, with U.S. officials making clear in recent days they are looking beyond both the sea of red on Wall Street and the avalanche of concern overseas that the U.S. central bank may be pushing the world to the brink of recession.

For the usually dovish Chicago Fed President Charles Evans, it was a "sobering assessment" of the breadth and persistence of high inflation that led him to join the consensus that U.S. interest rates will need to continue rising aggressively. For the hawkish St. Louis Fed President James Bullard, it is the potential for "chaos" if the Fed ignores its 2% inflation target that is outweighing concern about any immediate risks from the Fed's aggressive tightening.

Across the Fed's spectrum of opinion the reasons may vary, but the conclusion is the same. Higher interest rates are coming, and they are likely to remain in place for a long time.

"What we've heard from the Fed is simply not wanting to allow any dovish opening in their communications until financial conditions have hit much tighter levels and there's compelling evidence inflation is going to come down," said Matthew Luzzetti, chief U.S. economist at Deutsche Bank.

Despite volatility across global markets and warnings from international officials about the impact of U.S. monetary policy on the rest of the world, Fed officials "are reluctant, and I think rightly so, to say they are either worried or concerned, or that this is impacting policy," Luzzetti said.

'FINANCIAL MARKET RECESSION'

As if to emphasize the point, the S&P 500 index on Tuesday hit a fresh nearly two-year low in a bear market traders are pinning squarely on the Fed. The index has fallen roughly 14% in the nearly five weeks since Powell spoke in Wyoming, while the yield on the 2-year U.S. Treasury note has climbed from 3.3% to around 4.2%.

2022 stock market value loss: https://graphics.reuters.com/USA-FED/MARKETS/lbvgnqnzjpq/chart.png

"The Fed put is off the table. If the economy doesn't roll over and die and unemployment doesn't take off, it becomes a financial market recession more than a Main Street recession," said Charles Lemonides, the founder of hedge fund ValueWorks LLC. "People are not losing their jobs, but investors are down 20% in any asset class that there is."

The Fed last week raised rates by three-quarters of a percentage point, the third consecutive hike of that size. The central bank's policy rate is now 3 percentage points higher than where it began the year, and policymakers have indicated it will climb another 1.25 percentage points by January in the fastest policy tightening in decades.

The aim is to cool inflation running at more than triple the Fed's 2% target by its preferred measure, and policymakers say they have no inclination to hold back on the rate increases until inflation is clearly trending down.

In other words, it won't be a cratering of stock markets that drives the Fed to a policy "pivot," but several months of data showing that the back of inflation has been broken.

Some analysts worry the Fed's policy decisions are now running ahead of its ability to evaluate the impact on the economy of the rate hikes that already have been delivered, and cite market stress and volatility as evidence it may have overstepped.

That argument is not yet finding a home at the Fed.

"I don't like to base monetary policy on equities so much," Bullard said to an economic forum in London on Tuesday. "Equities are so volatile ... Part of it is a natural repricing of the value of some of these corporate entities and that would be the right response of the markets to the idea that we have higher interest rates."

'RESET' UNDERWAY

To some degree, in fact, the thrust of Fed policy is to force just such a reevaluation. Far from a Fed "put" that establishes a floor for financial markets, one way the central bank can slow demand and inflation is through wealth effects - the influence that the buying power stored in real estate, stocks and other assets has on actual spending, or in this case the loss of wealth that might cause some households to pull back.

According to one index maintained by the Chicago Fed, overall financial conditions remain below their historical average, or slightly on the "loose" side, a signal that Fed officials may still have, as many of them put it, "work to do."

Rising interest rates paid on safe investments like short-term U.S. Treasuries help that effort by changing the prices of a broad array of other assets. In the current environment, with the Fed leading a global tightening, it also has driven up the value of the dollar to a degree that has rattled overseas currency markets, investors and central banks that deal in dollar-denominated goods or financial instruments.

Stocks and bonds have tanked. The dollar has surged: https://graphics.reuters.com/USA-FED/MARKETS/zdpxologzvx/chart.png

Fed officials have never accepted the argument that their interest rate or other policy decisions are meant to support financial markets beyond ensuring that those markets retain enough public confidence to function, as they did with liquidity and other backstops during the COVID-19 pandemic.

Far from encouraging any thought that they will ease up, the same officials that once advocated for rates to stay "lower for longer" to encourage employment, now preach "higher for longer" to fix inflation.

How long that takes, and whether it is followed by rates that fall back to the low levels seen as a fixture of the global economy before the pandemic, or remain unexpectedly higher, could remold financial markets worldwide.

"There is some form of reset that is ongoing," said Gregory Daco, chief economist at EY-Parthenon. "I would not pretend to understand all the underlying dynamics and what is brewing."

(Reporting by Howard Schneider; Additional reporting by David Randall and Lindsay Dunsmuir; Editing by Dan Burns and Paul Simao)